2026 Ram 3500 Electrical Connector Parts: OEM & Replacement (54 Parts)

54 Electrical connector parts are listed for the 2026 Ram 3500, in 13 part types, covering both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. Each one has a brand, a manufacturer part number and notes that say where it fits.

The connector system on the 2026 Ram 3500 supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. The largest groups are Trailer Connector (13 parts), Headlamp Wiring Harness / Connector (9 parts) and Engine Wiring Harness / Connector (7 parts). The other 10 part types cover the remaining 25 parts.

Body Wiring Harness / Connector

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: all 2026 3500 engines	68606133AA	🇺🇸 US 🇨🇦 CA	Fits Delete Box, Rrview Autodim Digital Display Mirror Fitment notes — MOPAR 68606133AA Fits: Delete Box, Rrview Autodim Digital Display Mirror or: Rear View Auto Dim Mirror Digital 3.0 or Mopar Bkup CAM W RV Mirror/MonitorCrew Cab8' BoxHD 4WD or: Delete Box, Rrview Autodim Digital Display Mirror or: Rear View Auto Dim Mirror Digital 3.0 or Mopar Bkup CAM W RV Mirror/MonitorRegular Cab8 Foot BedHD 4WD or: Cab ChassisDelete Box, Rrview Autodim Digital Display MirrorRegular Cab Chassis Wheelbase 1HD 4WD or: Cab ChassisDelete Box, Rrview Autodim Digital Display MirrorRegular Cab Chassis Wheelbase 2HD 4WD or: Delete Box, Rrview Autodim Digital Display Mirror or: Rear View Auto Dim Mirror Digital 3.0 or Mopar Bkup CAM W RV Mirror/MonitorMega CabHD 4WD or: Delete Box, Rrview Autodim Digital Display Mirror or: Rear View Auto Dim Mirror Digital 3.0 or Mopar Bkup CAM W RV Mirror/MonitorCrew Cab Wheelbase 2HD 4WD or: Cab ChassisDelete Box, Rrview Autodim Digital Display MirrorCrew Cab Wheelbase 4HD 4WD	View on Amazon
MOPAR Fits: all 2026 3500 engines	68646392AA	🇺🇸 US 🇨🇦 CA	Fits Delete Box, Trailer Tire Pressure Monitoring SystemCrew Cab Fitment notes — MOPAR 68646392AA Fits: Delete Box, Trailer Tire Pressure Monitoring SystemCrew Cab8' BoxHD 4WD or: Delete Box, Trailer Tire Pressure Monitoring SystemMega CabHD 4WD or: Delete Box, Trailer Tire Pressure Monitoring SystemRegular Cab8 Foot BedHD 4WD or: Cab ChassisDelete Box, Trailer Tire Pressure Monitoring SystemRegular Cab Chassis Wheelbase 2HD 4WD or: Cab ChassisDelete Box, Trailer Tire Pressure Monitoring SystemRegular Cab Chassis Wheelbase 1HD 4WD or: Delete Box, Trailer Tire Pressure Monitoring SystemCrew Cab Wheelbase 2HD 4WD or: Cab ChassisDelete Box, Trailer Tire Pressure Monitoring SystemCrew Cab Wheelbase 4HD 4WD	View on Amazon
MOPAR Fits: all 2026 3500 engines	68647082AA	🇺🇸 US 🇨🇦 CA	Fits Cab ChassisRear View Auto Dim Mirror Digital 3.0 or Rrview Autodim Digital Display Mirror Fitment notes — MOPAR 68647082AA Fits: Cab ChassisRear View Auto Dim Mirror Digital 3.0 or Rrview Autodim Digital Display MirrorRegular Cab Chassis Wheelbase 1HD 4WD or: Cab ChassisRear View Auto Dim Mirror Digital 3.0 or Rrview Autodim Digital Display MirrorRegular Cab Chassis Wheelbase 2HD 4WD or: Rear View Auto Dim Mirror Digital 3.0Crew Cab Wheelbase 2HD 4WD or: Cab ChassisRear View Auto Dim Mirror Digital 3.0Crew Cab Wheelbase 4HD 4WD or: Rear View Auto Dim Mirror Digital 3.0 or Rrview Autodim Digital Display MirrorCrew Cab8' BoxHD 4WD or: Rear View Auto Dim Mirror Digital 3.0 or Rrview Autodim Digital Display MirrorMega CabHD 4WD or: Rear View Auto Dim Mirror Digital 3.0 or Rrview Autodim Digital Display MirrorRegular Cab8 Foot BedHD 4WD	View on Amazon
MOPAR Fits: all 2026 3500 engines	68647105AA	🇺🇸 US 🇨🇦 CA	Tail Lamp Fitment notes — MOPAR 68647105AA Tail Lamp Fits: Box or Rambox Cargo Management System, Incandescent TaillampsRegular Cab8 Foot BedHD 4WD or: Box or Rambox Cargo Management System, Incandescent TaillampsMega CabHD 4WD or: Box or Rambox Cargo Management System, Incandescent TaillampsCrew Cab Wheelbase 2HD 4WD or: Box or Rambox Cargo Management System, Incandescent TaillampsCrew Cab Crew Cab8' BoxHD 4WD	View on Amazon
MOPAR Fits: all 2026 3500 engines	68647106AA	🇺🇸 US 🇨🇦 CA	Tail Lamp Fitment notes — MOPAR 68647106AA Tail Lamp Fits: Box or Rambox Cargo Management System, Blind Spot and Cross Path DetectionRegular Cab8 Foot BedHD 4WD or: Box or Rambox Cargo Management System, Blind Spot and Cross Path DetectionMega CabHD 4WD or: Box or Rambox Cargo Management System, Blind Spot and Cross Path DetectionCrew Cab Wheelbase 2HD 4WD or: Box or Rambox Cargo Management System, Blind Spot and Cross Path DetectionCrew Cab Crew Cab8' BoxHD 4WD	View on Amazon

This table covers the body-harness connectors and pigtails. Typical signs include an intermittent fault that moves when you wiggle the harness, or a melted or corroded plug. Match terminal count and keyway. Repair with heat-shrink terminals, not twist-and-tape.

Diesel Exhaust Fluid (DEF) Pump Wiring Harness / Connector

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: 6.7L L6 DIESEL Turbocharged	57009258AA	🇺🇸 US 🇨🇦 CA	Urea Tank Harness Fitment notes — MOPAR 57009258AA Urea Tank Harness Fits: Cummins engine HO EngineSelective Catalytic Reduction (Urea)Crew Cab8' BoxHD 4WD or: Cummins engine HO EngineSelective Catalytic Reduction (Urea)Mega CabHD 4WD or: Cummins engine HO EngineSelective Catalytic Reduction (Urea)Crew Cab Wheelbase 2HD 4WD or: Cummins engine HO EngineSelective Catalytic Reduction (Urea)Regular Cab8 Foot BedHD 4WD	View on Amazon
MOPAR Fits: 6.7L L6 DIESEL Turbocharged	57009259AA	🇺🇸 US 🇨🇦 CA	Urea Tank Harness Fitment notes — MOPAR 57009259AA Urea Tank Harness Fits: Cab ChassisCummins EngineSelective Catalytic Reduction (Urea)Regular Cab Chassis Wheelbase 1HD 4WD or: Cab ChassisCummins EngineSelective Catalytic Reduction (Urea)Regular Cab Chassis Wheelbase 2HD 4WD or: Cab ChassisCummins engineSelective Catalytic Reduction (Urea)Crew Cab Wheelbase 4HD 4WD	View on Amazon

This table covers the wiring-harness connectors at the Diesel Exhaust Fluid (DEF) Pump. Typical signs include an intermittent fault that moves when you wiggle the harness, or a melted or corroded plug. Match terminal count and keyway. Repair with heat-shrink terminals, not twist-and-tape.

Door Wiring Harness / Connector

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: all 2026 3500 engines	68647401AB	🇺🇸 US 🇨🇦 CA	Rear Door Wiring Fitment notes — MOPAR 68647401AB Rear Door Wiring Fits: Cab ChassisSpeed Sensitive Power Locks, Rear Door Accent LightingCrew Cab Wheelbase 4HD 4WD or: Speed Sensitive Power Locks, Rear Door Accent LightingCrew Cab Wheelbase 2HD 4WD or: Speed Sensitive Power Locks, Rear Door Accent LightingMega CabHD 4WD or: Speed Sensitive Power Locks, Rear Door Accent LightingCrew Cab Crew Cab8' BoxHD 4WD	View on Amazon
MOPAR Fits: all 2026 3500 engines	68647402AA	🇺🇸 US 🇨🇦 CA	Rear Door Wiring Fitment notes — MOPAR 68647402AA Rear Door Wiring Fits: Cab ChassisSpeed Sensitive Power LocksExc. Rear Door Accent LightingCrew Cab Wheelbase 4HD 4WD or: Speed Sensitive Power LocksExc. Rear Door Accent LightingCrew Cab Wheelbase 2HD 4WD or: Speed Sensitive Power LocksExc. Rear Door Accent LightingMega CabHD 4WD or: Speed Sensitive Power LocksExc. Rear Door Accent LightingCrew Cab Crew Cab8' BoxHD 4WD	View on Amazon
MOPAR Fits: all 2026 3500 engines	68647501AB	🇺🇸 US 🇨🇦 CA	Rear Door Wiring Fitment notes — MOPAR 68647501AB Rear Door Wiring Fits: Cab ChassisSpeed Sensitive Power Locks, Rear Door Accent LightingCrew Cab Wheelbase 4HD 4WD or: Speed Sensitive Power Locks, Rear Door Accent LightingCrew Cab Wheelbase 2HD 4WD or: Speed Sensitive Power Locks, Rear Door Accent LightingMega CabHD 4WD or: Speed Sensitive Power Locks, Rear Door Accent LightingCrew Cab Crew Cab8' BoxHD 4WD	View on Amazon
MOPAR Fits: all 2026 3500 engines	68647502AA	🇺🇸 US 🇨🇦 CA	Rear Door Wiring Fitment notes — MOPAR 68647502AA Rear Door Wiring Fits: Cab ChassisSpeed Sensitive Power LocksExc. Rear Door Accent LightingCrew Cab Wheelbase 4HD 4WD or: Speed Sensitive Power LocksExc. Rear Door Accent LightingCrew Cab Wheelbase 2HD 4WD or: Speed Sensitive Power LocksExc. Rear Door Accent LightingMega CabHD 4WD or: Speed Sensitive Power LocksExc. Rear Door Accent LightingCrew Cab Crew Cab8' BoxHD 4WD	View on Amazon

This table covers the wiring-harness connectors at the Door. Typical signs include an intermittent fault that moves when you wiggle the harness, or a melted or corroded plug. Match terminal count and keyway. Repair with heat-shrink terminals, not twist-and-tape.

Engine Block Heater Connector

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: 6.4L V8	68676777AA	🇺🇸 US 🇨🇦 CA	Fits HEMI HD EngineEngine Block Heater Fitment notes — MOPAR 68676777AA Fits: HEMI HD EngineEngine Block HeaterCrew Cab Crew Cab8' BoxHD 4WD or: HEMI HD EngineEngine Block HeaterCrew Cab Wheelbase 2HD 4WD or: HEMI HD EngineEngine Block HeaterRegular Cab8 Foot BedHD 4WD or: HEMI HD EngineEngine Block HeaterMega CabHD 4WD or: Cab ChassisHEMI HD EngineEngine Block HeaterCrew Cab Wheelbase 48-Speed Automatic 8HP75-LCV TransmissionHD 4WD or: Cab ChassisHEMI HD EngineEngine Block HeaterRegular Cab Chassis Wheelbase 18-Speed Automatic 8HP75-LCV TransmissionHD 4WD or: Cab ChassisHEMI HD EngineEngine Block HeaterRegular Cab Chassis Wheelbase 28-Speed Automatic 8HP75-LCV TransmissionHD 4WD	View on Amazon
MOPAR Fits: 6.4L V8	68677885AA	🇺🇸 US 🇨🇦 CA	Fits Cab ChassisHEMI HD Engine Fitment notes — MOPAR 68677885AA Fits: Cab ChassisHEMI HD EngineEngine Block HeaterCrew Cab Wheelbase 48-SPD ZF Powerline Auto TransHD 4WD or: Cab ChassisHEMI HD EngineEngine Block HeaterRegular Cab Chassis Wheelbase 18-SPD ZF Powerline Auto TransHD 4WD or: Cab ChassisHEMI HD EngineEngine Block HeaterRegular Cab Chassis Wheelbase 28-SPD ZF Powerline Auto TransHD 4WD	View on Amazon
MOPAR Fits: 6.7L L6 DIESEL Turbocharged	68677893AA	🇺🇸 US 🇨🇦 CA	Fits Cummins engine HO EngineEngine Block Heater Fitment notes — MOPAR 68677893AA Fits: Cummins engine HO EngineEngine Block HeaterCrew Cab Crew Cab8' BoxHD 4WD or: Cummins engine HO EngineEngine Block HeaterCrew Cab Wheelbase 2HD 4WD or: Cummins engine HO EngineEngine Block HeaterRegular Cab8 Foot BedHD 4WD or: Cummins engine HO EngineEngine Block HeaterMega CabHD 4WD or: Cab ChassisCummins EngineEngine Block HeaterCrew Cab Wheelbase 4HD 4WD or: Cab ChassisCummins EngineEngine Block HeaterRegular Cab Chassis Wheelbase 1HD 4WD or: Cab ChassisCummins EngineEngine Block HeaterRegular Cab Chassis Wheelbase 2HD 4WD	View on Amazon

This table covers the harness connectors at the Engine Block Heater. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Engine Wiring Harness / Connector

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: 6.4L V8	68647510AE	🇺🇸 US 🇨🇦 CA	Fits Cab ChassisHEMI HD Engine Fitment notes — MOPAR 68647510AE Fits: Cab ChassisHEMI HD EngineDual Alternators Rated At 400 AmpsExcept Electric Shift-On-The-Fly Transfer Case or Dual Rear WheelsCrew Cab Wheelbase 48-Speed Automatic 8HP75-LCV Transmission or: Cab ChassisHEMI HD EngineDual Alternators Rated At 400 AmpsExcept Electric Shift-On-The-Fly Transfer Case or Dual Rear WheelsRegular Cab Chassis Wheelbase 18-Speed Automatic 8HP75-LCV Transmission or: Cab ChassisHEMI HD EngineDual Alternators Rated At 400 AmpsExcept Electric Shift-On-The-Fly Transfer Case or Dual Rear WheelsRegular Cab Chassis Wheelbase 28-Speed Automatic 8HP75-LCV Transmission	View on Amazon
MOPAR Fits: 6.4L V8	68647511AE	🇺🇸 US 🇨🇦 CA	Fits Cab ChassisHEMI HD Engine Fitment notes — MOPAR 68647511AE Fits: Cab ChassisHEMI HD EngineExc. Dual Alternators Rated At 400 AmpsExcept Electric Shift-On-The-Fly Transfer CaseExc. Dual Rear WheelsCrew Cab Wheelbase 48-SPD ZF Powerline Auto Trans or: Cab ChassisHEMI HD EngineExc. Dual Alternators Rated At 400 AmpsExcept Electric Shift-On-The-Fly Transfer CaseExc. Dual Rear WheelsRegular Cab Chassis Wheelbase 18-SPD ZF Powerline Auto Trans or: Cab ChassisHEMI HD EngineExc. Dual Alternators Rated At 400 AmpsExcept Electric Shift-On-The-Fly Transfer CaseExc. Dual Rear WheelsRegular Cab Chassis Wheelbase 28-SPD ZF Powerline Auto Trans	View on Amazon
MOPAR Fits: 6.4L V8	68647512AF	🇺🇸 US 🇨🇦 CA	Fits Cab ChassisHEMI HD Engine Fitment notes — MOPAR 68647512AF Fits: Cab ChassisHEMI HD EngineDual Alternators Rated At 400 AmpsExcept Electric Shift-On-The-Fly Transfer Case or Dual Rear WheelsCrew Cab Wheelbase 48-SPD ZF Powerline Auto Trans or: Cab ChassisHEMI HD EngineDual Alternators Rated At 400 AmpsExcept Electric Shift-On-The-Fly Transfer Case or Dual Rear WheelsRegular Cab Chassis Wheelbase 18-SPD ZF Powerline Auto Trans or: Cab ChassisHEMI HD EngineDual Alternators Rated At 400 AmpsExcept Electric Shift-On-The-Fly Transfer Case or Dual Rear WheelsRegular Cab Chassis Wheelbase 28-SPD ZF Powerline Auto Trans	View on Amazon
MOPAR Fits: 6.4L V8	68647513AF	🇺🇸 US 🇨🇦 CA	Fits Cab ChassisHEMI HD Engine Fitment notes — MOPAR 68647513AF Fits: Cab ChassisHEMI HD EngineElectric Shift-On-The-Fly Transfer CaseExc. Dual Alternators Rated At 400 Amps or Dual Rear WheelsCrew Cab Wheelbase 48-Speed Automatic 8HP75-LCV TransmissionHD 4WD or: Cab ChassisHEMI HD EngineElectric Shift-On-The-Fly Transfer CaseExc. Dual Alternators Rated At 400 Amps or Dual Rear WheelsRegular Cab Chassis Wheelbase 18-Speed Automatic 8HP75-LCV TransmissionHD 4WD or: Cab ChassisHEMI HD EngineElectric Shift-On-The-Fly Transfer CaseExc. Dual Alternators Rated At 400 Amps or Dual Rear WheelsRegular Cab Chassis Wheelbase 28-Speed Automatic 8HP75-LCV TransmissionHD 4WD	View on Amazon
MOPAR Fits: 6.4L V8	68647514AF	🇺🇸 US 🇨🇦 CA	Fits Cab ChassisHEMI HD Engine Fitment notes — MOPAR 68647514AF Fits: Cab ChassisHEMI HD EngineDual Alternators Rated At 400 Amps, Electric Shift-On-The-Fly Transfer CaseExc. Dual Rear WheelsCrew Cab Wheelbase 48-Speed Automatic 8HP75-LCV TransmissionHD 4WD or: Cab ChassisHEMI HD EngineDual Alternators Rated At 400 Amps, Electric Shift-On-The-Fly Transfer CaseExc. Dual Rear WheelsRegular Cab Chassis Wheelbase 18-Speed Automatic 8HP75-LCV TransmissionHD 4WD or: Cab ChassisHEMI HD EngineDual Alternators Rated At 400 Amps, Electric Shift-On-The-Fly Transfer CaseExc. Dual Rear WheelsRegular Cab Chassis Wheelbase 28-Speed Automatic 8HP75-LCV TransmissionHD 4WD	View on Amazon
MOPAR Fits: 6.7L L6 DIESEL Turbocharged	68725111AB	🇺🇸 US 🇨🇦 CA	Fits Cummins engine HO Engine50 State Emissions Fitment notes — MOPAR 68725111AB Fits: Cummins engine HO Engine50 State EmissionsCrew Cab8' Box8-Speed ZF Powerline Automatic TransmissionHD 4WD or: Cummins engine HO Engine50 State EmissionsMega Cab8-Speed ZF Powerline Automatic TransmissionHD 4WD or: Cummins engine HO Engine50 State EmissionsRegular Cab8 Foot Bed8-Speed ZF Powerline Automatic TransmissionHD 4WD or: Cummins engine HO EngineExport Emissions, Euro Stage 6B EmissionsCrew Cab8' Box8-Speed ZF Powerline Automatic TransmissionHD 4WD or: Cummins engine HO EngineExport Emissions, Euro Stage 6b EmissionsMega Cab8-Speed ZF Powerline Automatic TransmissionHD 4WD or: Cummins engine HO EngineExport Emissions, Euro Stage 6B EmissionsRegular Cab, 8 Foot Bed8-Speed ZF Powerline Automatic TransmissionHD 4WD or: Cummins engine HO Engine50 State EmissionsCrew Cab Wheelbase 28-SPD ZF Powerline Automatic TransHD 4WD or: Cummins engine HO EngineExport Emissions, Euro Stage 6b EmissionsCrew Cab Wheelbase 28-Speed ZF Power	View on Amazon
MOPAR Fits: 6.7L L6 DIESEL Turbocharged	68725266AA	🇺🇸 US 🇨🇦 CA	Fits Cab ChassisCummins Engine Fitment notes — MOPAR 68725266AA Fits: Cab ChassisCummins Engine50 State Emissionswithout Emergency Vehicle EmissionsRegular Cab Chassis Wheelbase 18-Speed ZF Powerline Automatic TransmissionHD 4WD or: Cab ChassisCummins Engine50 State Emissionswithout Emergency Vehicle EmissionsRegular Cab Chassis Wheelbase 28-Speed ZF Powerline Automatic TransmissionHD 4WD or: Cab ChassisCummins Engine50 State Emissions, with Emergency Vehicle EmissionsCrew Cab Wheelbase 48-Speed ZF Powerline Automatic TransmissionHD 4WD or: Cab ChassisCummins Engine50 State Emissions, with Emergency Vehicle EmissionsRegular Cab Chassis Wheelbase 18-Speed ZF Powerline Automatic TransmissionHD 4WD or: Cab ChassisCummins Engine50 State Emissions, with Emergency Vehicle EmissionsRegular Cab Chassis Wheelbase 28-Speed ZF Powerline Automatic TransmissionHD 4WD or: Cab ChassisCummins Engine50 State Emissionswithout Emergency Vehicle EmissionsCrew Cab Wheelbase 48-Speed ZF Powerline Automatic TransmissionHD 4WD	View on Amazon

This table covers the wiring-harness connectors at the Engine. Typical signs include an intermittent fault that moves when you wiggle the harness, or a melted or corroded plug. Match terminal count and keyway. Repair with heat-shrink terminals, not twist-and-tape.

Headlamp Wiring Harness / Connector

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: 6.4L V8	68646860AB	🇺🇸 US 🇨🇦 CA	Fits HEMI HD EngineSurround View Camera System Fitment notes — MOPAR 68646860AB Fits: HEMI HD EngineSurround View Camera SystemExc. Elec Shift-On-The-Fly Transfer Case or Remote Start SystemCrew Cab Crew Cab8' BoxHD 4WD or: HEMI HD EngineSurround View Camera SystemExc. Elec Shift-On-The-Fly Transfer Case or Remote Start SystemCrew Cab Wheelbase 2HD 4WD or: HEMI HD EngineSurround View Camera SystemExc. Elec Shift-On-The-Fly Transfer Case or Remote Start SystemMega CabHD 4WD or: HEMI HD EngineSurround View Camera SystemExc. Elec Shift-On-The-Fly Transfer Case or Remote Start SystemRegular Cab8 Foot BedHD 4WD	View on Amazon
MOPAR Fits: 6.4L V8	68646862AB	🇺🇸 US 🇨🇦 CA	Fits Cab ChassisHEMI HD Engine Fitment notes — MOPAR 68646862AB Fits: Cab ChassisHEMI HD EngineRemote Start SystemExc. Elec Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 4HD 4WD or: Cab ChassisHEMI HD EngineRemote Start SystemExc. Elec Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 1HD 4WD or: Cab ChassisHEMI HD EngineRemote Start SystemExc. Elec Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 2HD 4WD or: HEMI HD EngineRemote Start SystemExc. Surround View Camera System or Elec Shift-On-The-Fly Transfer CaseCrew Cab Crew Cab8' BoxHD 4WD or: HEMI HD EngineRemote Start SystemExc. Surround View Camera System or Elec Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 2HD 4WD or: HEMI HD EngineRemote Start SystemExc. Surround View Camera System or Elec Shift-On-The-Fly Transfer CaseMega CabHD 4WD or: HEMI HD EngineRemote Start SystemExc. Surround View Camera System or Elec Shift-On-The-Fly Transfer CaseRegular Cab8 Foot BedHD 4WD	View on Amazon
MOPAR Fits: 6.4L V8	68646863AB	🇺🇸 US 🇨🇦 CA	Fits Cab ChassisHEMI HD Engine Fitment notes — MOPAR 68646863AB Fits: Cab ChassisHEMI HD EngineRemote Start System, Elec Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 4HD 4WD or: Cab ChassisHEMI HD EngineRemote Start System, Elec Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 1HD 4WD or: Cab ChassisHEMI HD EngineRemote Start System, Elec Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 2HD 4WD or: HEMI HD EngineRemote Start System, Elec Shift-On-The-Fly Transfer CaseExc. Surround View Camera SystemCrew Cab Crew Cab8' BoxHD 4WD or: HEMI HD EngineRemote Start System, Elec Shift-On-The-Fly Transfer CaseExc. Surround View Camera SystemCrew Cab Wheelbase 2HD 4WD or: HEMI HD EngineRemote Start System, Elec Shift-On-The-Fly Transfer CaseExc. Surround View Camera SystemMega CabHD 4WD or: HEMI HD EngineRemote Start System, Elec Shift-On-The-Fly Transfer CaseExc. Surround View Camera SystemRegular Cab8 Foot BedHD 4WD	View on Amazon
MOPAR Fits: 6.4L V8	68646864AB	🇺🇸 US 🇨🇦 CA	Fits HEMI HD EngineRemote Start System, Surround View Camera System Fitment notes — MOPAR 68646864AB Fits: HEMI HD EngineRemote Start System, Surround View Camera SystemCrew Cab Crew Cab8' BoxHD 4WD or: HEMI HD EngineRemote Start System, Surround View Camera SystemCrew Cab Wheelbase 2HD 4WD or: HEMI HD EngineRemote Start System, Surround View Camera SystemMega CabHD 4WD or: HEMI HD EngineRemote Start System, Surround View Camera SystemRegular Cab8 Foot BedHD 4WD	View on Amazon
MOPAR Fits: 6.7L L6 DIESEL Turbocharged	68646875AB	🇺🇸 US 🇨🇦 CA	Fits Cummins engine HO EngineSurround View Camera System Fitment notes — MOPAR 68646875AB Fits: Cummins engine HO EngineSurround View Camera SystemExc. Elec Shift-On-The-Fly Transfer Case or Remote Start SystemRegular Cab8 Foot BedHD 4WD or: Cummins engine HO EngineSurround View Camera SystemExc. Elec Shift-On-The-Fly Transfer Case or Remote Start SystemMega CabHD 4WD or: Cummins engine HO EngineSurround View Camera SystemExc. Elec Shift-On-The-Fly Transfer Case or Remote Start SystemCrew Cab Crew Cab8' BoxHD 4WD or: Cummins engine HO EngineSurround View Camera SystemExc. Elec Shift-On-The-Fly Transfer Case or Remote Start SystemCrew Cab Wheelbase 2HD 4WD	View on Amazon
MOPAR Fits: 6.7L L6 DIESEL Turbocharged	68646877AB	🇺🇸 US 🇨🇦 CA	Fits Cummins engine HO EngineRemote Start System Fitment notes — MOPAR 68646877AB Fits: Cummins engine HO EngineRemote Start SystemExc. Surround View Camera System or Elec Shift-On-The-Fly Transfer CaseRegular Cab8 Foot BedHD 4WD or: Cab ChassisCummins EngineRemote Start SystemExc. Elec Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 1HD 4WD or: Cab ChassisCummins EngineRemote Start SystemExc. Elec Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 2HD 4WD or: Cummins engine HO EngineRemote Start SystemExc. Surround View Camera System or Elec Shift-On-The-Fly Transfer CaseMega CabHD 4WD or: Cab ChassisCummins EngineRemote Start SystemExc. Elec Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 4HD 4WD or: Cummins engine HO EngineRemote Start SystemExc. Surround View Camera System or Elec Shift-On-The-Fly Transfer CaseCrew Cab Crew Cab8' BoxHD 4WD or: Cummins engine HO EngineRemote Start SystemExc. Surround View Camera System or Elec Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 2HD 4WD	View on Amazon
MOPAR Fits: 6.7L L6 DIESEL Turbocharged	68646878AB	🇺🇸 US 🇨🇦 CA	Fits Cummins engine HO EngineRemote Start System, Elec Shift-On-The-Fly Transfer Case Fitment notes — MOPAR 68646878AB Fits: Cummins engine HO EngineRemote Start System, Elec Shift-On-The-Fly Transfer CaseExc. Surround View Camera SystemRegular Cab8 Foot BedHD 4WD or: Cab ChassisCummins EngineRemote Start System, Elec Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 1HD 4WD or: Cab ChassisCummins EngineRemote Start System, Elec Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 2HD 4WD or: Cummins engine HO EngineRemote Start System, Elec Shift-On-The-Fly Transfer CaseExc. Surround View Camera SystemMega CabHD 4WD or: Cab ChassisCummins EngineRemote Start System, Elec Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 4HD 4WD or: Cummins engine HO EngineRemote Start System, Elec Shift-On-The-Fly Transfer CaseExc. Surround View Camera SystemCrew Cab Crew Cab8' BoxHD 4WD or: Cummins engine HO EngineRemote Start System, Elec Shift-On-The-Fly Transfer CaseExc. Surround View Camera SystemCrew Cab Wheelbase 2HD 4WD	View on Amazon
MOPAR Fits: 6.7L L6 DIESEL Turbocharged	68646879AB	🇺🇸 US 🇨🇦 CA	Fits Cummins engine HO EngineRemote Start System, Surround View Camera System Fitment notes — MOPAR 68646879AB Fits: Cummins engine HO EngineRemote Start System, Surround View Camera SystemExc. Elec Shift-On-The-Fly Transfer CaseRegular Cab8 Foot BedHD 4WD or: Cummins engine HO EngineRemote Start System, Surround View Camera SystemExc. Elec Shift-On-The-Fly Transfer CaseMega CabHD 4WD or: Cummins engine HO EngineRemote Start System, Surround View Camera SystemExc. Elec Shift-On-The-Fly Transfer CaseCrew Cab Crew Cab8' BoxHD 4WD or: Cummins engine HO EngineRemote Start System, Surround View Camera SystemExc. Elec Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 2HD 4WD	View on Amazon
MOPAR Fits: 6.7L L6 DIESEL Turbocharged	68646880AB	🇺🇸 US 🇨🇦 CA	Fits Cummins engine HO EngineSurround View Camera System, Electric Shift-On-The-Fly Transfer Case, Remote Start System Fitment notes — MOPAR 68646880AB Fits: Cummins engine HO EngineSurround View Camera System, Electric Shift-On-The-Fly Transfer Case, Remote Start SystemCrew Cab Wheelbase 2HD 4WD or: Cummins engine HO EngineSurround View Camera System, Electric Shift-On-The-Fly Transfer Case, Remote Start SystemCrew Cab Crew Cab8' BoxHD 4WD or: Cummins engine HO EngineSurround View Camera System, Electric Shift-On-The-Fly Transfer Case, Remote Start SystemMega CabHD 4WD or: Cummins engine HO EngineSurround View Camera System, Electric Shift-On-The-Fly Transfer Case, Remote Start SystemRegular Cab8 Foot BedHD 4WD	View on Amazon

This table covers the wiring-harness connectors at the Headlamp. Typical signs include an intermittent fault that moves when you wiggle the harness, or a melted or corroded plug. Match terminal count and keyway. Repair with heat-shrink terminals, not twist-and-tape.

Steering Wheel Connector

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: all 2026 3500 engines	68716781AA	🇺🇸 US 🇨🇦 CA	Fits 4-Spoke Steering Wheel, Integrated Voice Command with Bluetooth, Electronic Range Select, Adaptive Cruise Control with StopExcept Steering Wheel Mounted Audio Controls or Cluster 12" TFT Color Display Fitment notes — MOPAR 68716781AA Fits: 4-Spoke Steering Wheel, Integrated Voice Command with Bluetooth, Electronic Range Select, Adaptive Cruise Control with StopExcept Steering Wheel Mounted Audio Controls or Cluster 12" TFT Color DisplayCrew Cab8' BoxHD 4WD or: 4-Spoke Steering Wheel, Integrated Voice Command with Bluetooth, Electronic Range Select, Adaptive Cruise Control with StopExcept Steering Wheel Mounted Audio Controls or Cluster 12" TFT Color DisplayRegular Cab8 Foot BedHD 4WD or: 4-Spoke Steering Wheel, Integrated Voice Command with Bluetooth, Electronic Range Select, Adaptive Cruise Control with StopExcept Steering Wheel Mounted Audio Controls or Cluster 12" TFT Color DisplayMega CabHD 4WD or: 4-Spoke Steering Wheel, Integrated Voice Command with Bluetooth, Electronic Range Select, Adaptive Cruise Control with StopExcept Steering Wheel Mounted Audio Controls or Cluster 12" TFT Color DisplayCrew Cab Wheelbase 2HD 4WD or: Cab Chassis4-Spoke Steering Wheel, Integrated Voice Command with Bluetooth, Electron	View on Amazon

This table covers the harness connectors at the Steering Wheel. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Trailer Adapter Connector

Brand	Part Number	Markets	Notes	Buy
CURT Fits: all 2026 3500 engines	57101	🇺🇸 US 🇨🇦 CA	7-Way Round RV To 4-Way Flat Adapter Fitment notes — CURT 57101 7-Way Round RV To 4-Way Flat Adapter with Back Up AlarmGM/Ford Plug	View on Amazon

This table covers the harness connectors at the Trailer Adapter. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Trailer Brake Switch Connector

Brand	Part Number	Markets	Notes	Buy
CURT Fits: all 2026 3500 engines	51446	🇺🇸 US 🇨🇦 CA	Brake Control Adapter Harness Fitment notes — CURT 51446 Brake Control Adapter Harness with Quick Plug	View on Amazon

This table covers the harness connectors at the Trailer Brake Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Trailer Connector

Brand	Part Number	Markets	Notes	Buy
CURT Popular Fits: all 2026 3500 engines	55415	🇺🇸 US 🇨🇦 CA	Replacement 7-Way RV Blade OEM Socket	View on Amazon
CURT Popular Fits: all 2026 3500 engines	56415	🇺🇸 US 🇨🇦 CA	Replacement 7-Way RV Blade OEM SocketTwist-In	View on Amazon
CURT Popular Fits: all 2026 3500 engines	56229	🇺🇸 US 🇨🇦 CA	7-Way USCAR Electrical ConnectorLength: 24 in. Fitment notes — CURT 56229 7-Way USCAR Electrical ConnectorLength: 24 in.Bonded Wire	View on Amazon
CURT Fits: all 2026 3500 engines	55416	🇺🇸 US 🇨🇦 CA	Heavy Duty Replacement OEM 7-Way RV Blade SocketPlugs Into USCAR Socket	View on Amazon
CURT Fits: all 2026 3500 engines	55515	🇺🇸 US 🇨🇦 CA	Custom Wiring ConnectorOE 4-Way Flat Fitment notes — CURT 55515 Custom Wiring ConnectorOE 4-Way FlatPlugs Into USCAR Replacement2-Wire System	View on Amazon
CURT Fits: all 2026 3500 engines	56515	🇺🇸 US 🇨🇦 CA	Custom Wiring Connector5-Way Flat Fitment notes — CURT 56515 Custom Wiring Connector5-Way Flat 2-Wire System	View on Amazon
CURT Fits: all 2026 3500 engines	57015	🇺🇸 US 🇨🇦 CA	OEM Replacement Dual-Output 7 and 4 Way ConnectorPlugs Into USCAR Socket	View on Amazon
CURT Fits: all 2026 3500 engines	55384	🇺🇸 US 🇨🇦 CA	Custom Wiring Connector4-Way Flat Fitment notes — CURT 55384 Custom Wiring Connector4-Way FlatRetains Use of 7 Way Round Connector 2-Wire System	View on Amazon
CURT Fits: all 2026 3500 engines	57020	🇺🇸 US 🇨🇦 CA	OEM Replacement Dual-Output 7 and 4 Way ConnectorPackaged Fitment notes — CURT 57020 OEM Replacement Dual-Output 7 and 4 Way ConnectorPackaged Factory TowPlugs Into USCAR	View on Amazon
CURT Fits: all 2026 3500 engines	55774	🇺🇸 US 🇨🇦 CA	OEM Vehicle to Trailer Connector with Harness7-Way and 4-Way	View on Amazon
CURT Fits: all 2026 3500 engines	56584	🇺🇸 US 🇨🇦 CA	Custom Wiring Harness5-Way Flat Fitment notes — CURT 56584 Custom Wiring Harness5-Way FlatRetains Use Of 7-Way OEM 2-Wire System5 Way Flat	View on Amazon
DORMAN Fits: all 2026 3500 engines	924611	🇺🇸 US 🇨🇦 CA		View on Amazon
MOPAR Fits: all 2026 3500 engines	68573359AA	🇺🇸 US 🇨🇦 CA	Fits Exc. Surround View Camera SystemExcept Trailer Camera Wiring/No Camera Fitment notes — MOPAR 68573359AA Fits: Exc. Surround View Camera SystemExcept Trailer Camera Wiring/No CameraCrew Cab Wheelbase 2HD 4WD or: Exc. Surround View Camera SystemExcept Trailer Camera Wiring/No CameraCrew Cab8' BoxHD 4WD or: Exc. Surround View Camera SystemExcept Trailer Camera Wiring/No CameraRegular Cab8 Foot BedHD 4WD or: Exc. Surround View Camera SystemExcept Trailer Camera Wiring/No CameraMega CabHD 4WD	View on Amazon

This table covers the trailer-lighting connectors at the hitch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Trailer Extension Connector

Brand	Part Number	Markets	Notes	Buy
CURT Fits: all 2026 3500 engines	56475	🇺🇸 US 🇨🇦 CA	Custom Wiring Harness Extension Fitment notes — CURT 56475 Custom Wiring Harness Extension 20"Uscar To Uscar	View on Amazon
CURT Fits: all 2026 3500 engines	56070010	🇺🇸 US 🇨🇦 CA	Custom Wiring Harness Extension7 ft. Fitment notes — CURT 56070010 Custom Wiring Harness Extension7 ft.Pack of 10 7 WayFor 5th Wheel or Gooseneck In Bed Connection	View on Amazon
CURT Fits: all 2026 3500 engines	56000010	🇺🇸 US 🇨🇦 CA	Custom Wiring Harness ExtensionPack of 10 Fitment notes — CURT 56000010 Custom Wiring Harness ExtensionPack of 10Length: 10 ft. 7 WayFor 5th Wheel or Gooseneck In Bed Connection	View on Amazon

This table covers the harness connectors at the Trailer Extension. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Transmission-Automatic Wiring Harness / Connector

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: 6.7L L6 DIESEL Turbocharged	68647713AD	🇺🇸 US 🇨🇦 CA	automatic Fitment notes — MOPAR 68647713AD automatic Fits: Cummins engine HO EngineElectric Shift-On-The-Fly Transfer CaseCrew Cab8' Box8-Speed ZF Powerline Automatic TransmissionHD 4WD or: Cummins engine HO EngineElectric Shift-On-The-Fly Transfer CaseRegular Cab, 8 Foot Bed8-Speed ZF Powerline Automatic TransmissionHD 4WD or: Cummins engine HO EngineElectric Shift-On-The-Fly Transfer CaseMega Cab8-Speed ZF Powerline Automatic TransmissionHD 4WD or: Cummins engine HO EngineElectric Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 28-Speed ZF Powerline Automatic TransmissionHD 4WD	View on Amazon
MOPAR Fits: 6.7L L6 DIESEL Turbocharged	68647714AD	🇺🇸 US 🇨🇦 CA	automatic Fitment notes — MOPAR 68647714AD automatic Fits: Cab ChassisCummins EngineExc. Elec Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 18-Speed ZF Powerline Automatic TransmissionHD 4WD or: Cab ChassisCummins EngineExc. Elec Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 28-Speed ZF Powerline Automatic TransmissionHD 4WD or: Cab ChassisCummins EngineExc. Elec Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 48-Speed ZF Powerline Automatic TransmissionHD 4WD	View on Amazon
MOPAR Fits: 6.7L L6 DIESEL Turbocharged	68647715AE	🇺🇸 US 🇨🇦 CA	automatic Fitment notes — MOPAR 68647715AE automatic Fits: Cab ChassisCummins EngineElectric Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 18-Speed ZF Powerline Automatic TransmissionHD 4WD or: Cab ChassisCummins EngineElectric Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 28-Speed ZF Powerline Automatic TransmissionHD 4WD or: Cab ChassisCummins EngineElectric Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 48-Speed ZF Powerline Automatic TransmissionHD 4WD	View on Amazon
MOPAR Fits: 6.7L L6 DIESEL Turbocharged	68648712AD	🇺🇸 US 🇨🇦 CA	automatic Fitment notes — MOPAR 68648712AD automatic Fits: Cummins engine HO EngineExc. Electric Shift-On-The-Fly Transfer CaseCrew Cab8' Box8-Speed ZF Powerline Automatic TransmissionHD 4WD or: Cummins engine HO EngineExc. Electric Shift-On-The-Fly Transfer CaseRegular Cab, 8 Foot Bed8-Speed ZF Powerline Automatic TransmissionHD 4WD or: Cummins engine HO EngineExc. Elec Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 28-Speed ZF Powerline Automatic TransmissionHD 4WD	View on Amazon

This table covers the wiring-harness connectors at the Transmission-Automatic. Typical signs include an intermittent fault that moves when you wiggle the harness, or a melted or corroded plug. Match terminal count and keyway. Repair with heat-shrink terminals, not twist-and-tape.

USB / AUX Port Connector

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: all 2026 3500 engines	68480124AB	🇺🇸 US 🇨🇦 CA	Hub Media CenterHDMI USB & AUX Fitment notes — MOPAR 68480124AB Hub Media CenterHDMI USB & AUXSD USB Port Auxiliary Fits: Full Length Premium Upgraded Floor Console, Dual Wireless Charging Pad, Front Passenger Interactive Display, Instrument Panel Bezels-Aluminum Litho with Real Wood # 2Crew Cab Wheelbase 2HD 4WD or: Full Length Premium Upgraded Floor Console, Dual Wireless Charging Pad, Front Passenger Interactive Display, Instrument Panel Bezels-Aluminum Litho with Real Wood # 2Crew Cab8' BoxHD 4WD or: Full Length Premium Upgraded Floor Console, Dual Wireless Charging Pad, Front Passenger Interactive Display, Instrument Panel Bezels-Aluminum Litho with Real Wood # 2Mega CabHD 4WD or: Full Length Premium Upgraded Floor Console, Dual Wireless Charging Pad, Front Passenger Interactive Display, Instrument Panel BezelCrew Cab Wheelbase 2HD 4WD or: Full Length Premium Upgraded Floor Console, Dual Wireless Charging Pad, Front Passenger Interactive Display, Instrument Panel BezelCrew Cab8' BoxHD 4WD or: Full Length Premium Upgraded Floor Con	View on Amazon

This table covers the harness connectors at the USB / AUX Port. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Buying Electrical Connector Parts for a 2026 Ram 3500

On this vehicle, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules.

Match the engine first. Some electrical connector parts fit every engine; others are engine-specific. Each row shows which engine(s) it fits.
Read the notes on each row for position, trim and spec qualifiers before you order.
Where labor overlaps, use heat-shrink crimp connectors rather than twist-and-tape for any pigtail splice, especially outside the cabin.
Cross-reference the manufacturer part number against your old part or a service-manual listing.

Start with the largest groups on this page: Trailer Connector and Headlamp Wiring Harness / Connector .

Frequently Asked Questions

How many electrical connector parts fit the 2026 Ram 3500?

Our catalog currently lists 54 electrical connector parts for the 2026 Ram 3500 across 13 subcategories and 3 brands, covering both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. Each part is matched to the engine(s) it fits.

Do electrical connector parts differ between 2026 Ram 3500 engines?

Some do. 29 parts fit every engine; the other 25 are engine-specific. Each row (and the filter at the top) shows which. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.

What are the signs of electrical connector problems on a 2026 Ram 3500?

Common symptoms include intermittent faults that move when the harness is wiggled, green corrosion inside a plug, or melted connector housings near heat sources. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.

What should I replace at the same time?

Where labor overlaps, use heat-shrink crimp connectors rather than twist-and-tape for any pigtail splice, especially outside the cabin.

What do the market flags (US, CA, MX) on each part mean?

They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2026 Ram 3500 was originally sold in the US, the safest choice is a part marked for the US market.

How do I make sure a part fits my 2026 Ram 3500?

First match the engine — each row shows which engine(s) the part fits. Then match the connector by terminal count and keyway, not just appearance — many families look identical but will not lock. The notes column carries position and trim qualifiers where they apply.

Other Parts for the 2026 Ram 3500

Belt Drive Body & Lamp Assembly Brake & Wheel Hub Cooling System Drivetrain Electrical Electrical Switch & Relay Engine Exhaust & Emission Fuel & Air Heat & Air Conditioning Ignition Interior Steering Suspension Automatic Transmission Wheel Wiper & Washer

Electrical Connector Parts for Other Ram 3500 Years

2025 Ram 3500 2024 Ram 3500 2023 Ram 3500 2022 Ram 3500 2021 Ram 3500 2020 Ram 3500 2019 Ram 3500 2018 Ram 3500 2017 Ram 3500 2016 Ram 3500 2015 Ram 3500 2014 Ram 3500

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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.

Published by AutoFactsDB from manufacturer application data. How fitment is matched Report a fitment error