2018 Ram Promaster Rapid Electrical Switch & Relay Parts: OEM & Replacement (16 Parts)

The 2018 Ram Promaster Rapid has 16 electrical switch & relay parts with verified fitment on this page — 8 part types and 4 brands, covering the 1.4L L4 engine. Each part includes a manufacturer part number and application notes.

The switch and relay system on the 2018 Ram Promaster Rapid covers the switches, relays and flashers that route power to everything the driver touches. The largest groups are Door Lock Switch (4 parts), A/C Refrigerant Pressure Switch (2 parts) and HVAC Control Switch / Panel (2 parts). The other 5 part types cover the remaining 8 parts.

A/C Refrigerant Pressure Switch

Brand	Part Number	Markets	Notes	Buy
FOUR SEASONS	37368	🇲🇽 MX	Pressure Switch Fitment notes — FOUR SEASONS 37368 Pressure Switch Transducer	View on Amazon
UAC	SW10008C	🇲🇽 MX	Pressure Transducer Fitment notes — UAC SW10008C Pressure Transducer Transducer	View on Amazon

This table covers the pressure switches on the A/C circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Brake Light Switch

Brand	Part Number	Markets	Notes	Buy
MOPAR	68349583AA	🇲🇽 MX	Fits 2 Door Convertibl Fitment notes — MOPAR 68349583AA Fits: 2 Door Convertibl or: 119 WB or: 113 WB or: Club Cab 2 Door 8' Boxor Van Wheelbas or: Cab Chassis Wheelbas or: QUAD CAB 4DR 8' BOX/3-DR HATCH or: GLAZED VAN	View on Amazon

This table covers the pedal-mounted switch that turns on the brake lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Door Lock Switch

Brand	Part Number	Markets	Notes	Buy
MOPAR	7EN89JXWAA	🇲🇽 MX	Fits Front2 Door CONVERTIBLE Fitment notes — MOPAR 7EN89JXWAA Fits: Front2 Door CONVERTIBLE or: Front113 WB or: Front119 WB or: FrontCab Chassis Wheelbase or: FrontClub Cab 2 Door 8' Box or: FrontVan Wheelbase or: FrontQUAD CAB 4DR 8' BOX/3-DR HATCH or: FrontGlazed Van	View on Amazon
MOPAR	1ZP74JXWAD	🇲🇽 MX	FrontRight Fitment notes — MOPAR 1ZP74JXWAD FrontRightManual MirrorsFold-AwayCab Chassis Wheelbase	View on Amazon
MOPAR	1ZP75JXWAD	🇲🇽 MX	Fits FrontExc. Power Heated Mirrors Fitment notes — MOPAR 1ZP75JXWAD Fits: FrontExc. Power Heated Mirrors113 WB or: FrontExc. Power Heated Mirrors119 WB or: FrontExc. Power Heated Mirrors2 door Convertible or: FrontExc. Power Heated MirrorsGlazed Van or: FrontExc. Power Heated MirrorsVan Wheelbase or: FrontRemote Keyless EntryExc. Power Heated MirrorsCab Chassis Wheelbase or: FrontRemote Keyless EntryExc. Power Heated MirrorsClub Cab 2 door 8' Box or: FrontRemote Keyless EntryExc. Power Heated MirrorsQuad Cab 4DR 8' Box/3-DR Hatch	View on Amazon
MOPAR	1ZP67JXWAD	🇲🇽 MX	Fits Front2 Door CONVERTIBLE Fitment notes — MOPAR 1ZP67JXWAD Fits: Front2 Door CONVERTIBLE or: Front113 WB or: Front119 WB or: FrontCab Chassis Wheelbase or: FrontClub Cab 2 Door 8' Box or: FrontVan Wheelbase or: FrontQUAD CAB 4DR 8' BOX/3-DR HATCH or: FrontGlazed Van	View on Amazon

This table covers the Door Lock switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

HVAC Control Switch / Panel

Brand	Part Number	Markets	Notes	Buy
MOPAR	5NC23DX9AF	🇲🇽 MX	Fits A/CExcept Rear Window Defroster or Power Heated Mirrors Fitment notes — MOPAR 5NC23DX9AF Fits: A/CExcept Rear Window Defroster or Power Heated Mirrors113 WB or: A/CExcept Rear Window Defroster or Power Heated Mirrors119 WB or: A/CExcept Rear Window Defroster or Power Heated MirrorsCab Chassis Wheelbas or: A/CExcept Rear Window Defroster or Power Heated MirrorsClub Cab 2 door 8' Boxor A/CExcept Rear Window Defroster or Power Heated MirrorsQuad Cab 4DR 8' Box/3-DR Hatchor A/CExcept Rear Window Defroster or Power Heated MirrorsVan Wheelbas or: A/CExcept Rear Window Defroster or Power Heated Mirrors2 door Convertibl or: A/CExcept Rear Window Defroster or Power Heated MirrorsGlazed Van	View on Amazon
MOPAR	5NC24DX9AF	🇲🇽 MX	Fits Air Conditioning, Rear Window Defroster or Power Heated MirrorsRear Window Defroster or Power Heated Mirrors Fitment notes — MOPAR 5NC24DX9AF Fits: Air Conditioning, Rear Window Defroster or Power Heated MirrorsRear Window Defroster or Power Heated Mirrors113 WB or: Air Conditioning, Rear Window Defroster or Power Heated MirrorsRear Window Defroster or Power Heated Mirrors119 WB or: Air Conditioning, Rear Window Defroster or Power Heated MirrorsRear Window Defroster or Power Heated MirrorsCab Chassis Wheelbas or: Air Conditioning, Rear Window Defroster or Power Heated MirrorsRear Window Defroster or Power Heated MirrorsClub Cab 2 door 8' Boxor Air Conditioning, Rear Window Defroster or Power Heated MirrorsRear Window Defroster or Power Heated MirrorsQuad Cab 4DR 8' Box/3-DR Hatchor Air Conditioning, Rear Window Defroster or Power Heated MirrorsRear Window Defroster or Power Heated MirrorsVan Wheelbas or: Air Conditioning, Rear Window Defroster or Power Heated MirrorsRear Window Defroster or Power Heated Mirrors2 door Convertibl or: Air Conditioning, Rear Window Defroster or Power Heated MirrorsRear Wind	View on Amazon

This table covers the HVAC Control Switch panels.

Instrument Cluster Switch

Brand	Part Number	Markets	Notes	Buy
MOPAR	5MK27JXWAA	🇲🇽 MX	Fits Electronic Stability ControlExc. Fog Lamps Fitment notes — MOPAR 5MK27JXWAA Fits: Electronic Stability ControlExc. Fog Lamps113 WB or: Electronic Stability ControlExc. Fog Lamps119 WB or: Electronic Stability ControlExc. Fog LampsVan Wheelbas or: Electronic Stability ControlExc. Fog LampsCab Chassis Wheelbas or: Electronic Stability ControlExc. Fog LampsClub Cab 2 door 8' Boxor Electronic Stability ControlExc. Fog LampsQuad Cab 4DR 8' Box/3-DR Hatchor Electronic Stability ControlExc. Fog Lamps2 door Convertibl or: Electronic Stability ControlExc. Fog LampsGlazed Van	View on Amazon
MOPAR	5MK26JXWAA	🇲🇽 MX	Fits Fog Lamps, Electronic Stability Control113 WB Fitment notes — MOPAR 5MK26JXWAA Fits: Fog Lamps, Electronic Stability Control113 WB or: Fog Lamps, Electronic Stability Control119 WB or: Fog Lamps, Electronic Stability ControlVan Wheelbas or: Fog Lamps, Electronic Stability ControlCab Chassis Wheelbas or: Fog Lamps, Electronic Stability ControlClub Cab 2 door 8' Boxor Fog Lamps, Electronic Stability ControlQuad Cab 4DR 8' Box/3-DR Hatchor Fog Lamps, Electronic Stability Control2 door Convertibl or: Fog Lamps, Electronic Stability ControlGlazed Van	View on Amazon

This table covers the Instrument Cluster switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Parking Brake Switch

Brand	Part Number	Markets	Notes	Buy
MOPAR	68134026AA	🇲🇽 MX	Fits Exc. Electric Park Brake119 WB Fitment notes — MOPAR 68134026AA Fits: Exc. Electric Park Brake119 WB or: Exc. Electric Park Brake113 WB or: Exc. Electric Park BrakeVan Wheelbas or: Exc. Electric Park Brake2 door Convertibl or: Exc. Electric Park BrakeCab Chassis Wheelbas or: Exc. Electric Park BrakeClub Cab 2 door 8' Boxor Exc. Electric Park BrakeQuad Cab 4DR 8' Box/3-DR Hatchor Exc. Electric Park BrakeGlazed Van	View on Amazon
MOPAR	68248434AA	🇲🇽 MX	Brake SwitchElectric Park Brake Fitment notes — MOPAR 68248434AA Brake SwitchElectric Park Brake Fits: 113 WB6 Speed Manual Trans Automatedor 119 WB6 Speed Manual Trans Automatedor GLAZED VAN6 Speed Manual Trans Automatedor VAN Wheelbase6 Speed Manual Trans Automatedor Cab Chassis Wheelbase6 Speed Manual Trans Automatedor Club Cab 2 Door 8' Box6 Speed Manual Trans Automatedor Quad Cab 4DR 8' Box/3-DR Hatch6 Speed Manual Trans Automatedor 2 door Convertible6 Speed Manual Trans Automated	View on Amazon

This table covers the Parking Brake switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Radiator Fan Relay

Brand	Part Number	Markets	Notes	Buy
DORMAN	921301	🇲🇽 MX	Motor Relay	View on Amazon

This table covers the relays that control the Radiator Fan circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Turn Signal Switch

Brand	Part Number	Markets	Notes	Buy
MOPAR	5MT59JXWAA	🇲🇽 MX	Instrument Panel Fitment notes — MOPAR 5MT59JXWAA Instrument Panel Fits: Except Rear Auxiliary Heater PreparationExcept Black Switches113 WB or: Except Rear Auxiliary Heater PreparationExcept Black Switches119 WB or: Except Rear Auxiliary Heater PreparationExcept Black Switches2 door Convertibl or: Except Rear Auxiliary Heater PreparationExcept Black SwitchesCab Chassis Wheelbas or: Except Rear Auxiliary Heater PreparationExcept Black SwitchesClub Cab 2 door 8' Boxor Except Rear Auxiliary Heater PreparationExcept Black SwitchesQuad Cab 4DR 8' Box/3-DR Hatchor Except Rear Auxiliary Heater PreparationExcept Black SwitchesVan Wheelbas or: Except Rear Auxiliary Heater PreparationExcept Black SwitchesGlazed Van	View on Amazon
MOPAR	6LC93JXWAA	🇲🇽 MX	Instrument Panel Fitment notes — MOPAR 6LC93JXWAA Instrument Panel Fits: Black SwitchesExcept Rear Auxiliary Heater Preparation113 WB or: Black SwitchesExcept Rear Auxiliary Heater Preparation119 WB or: Black SwitchesExcept Rear Auxiliary Heater Preparation2 door Convertibl or: Black SwitchesExcept Rear Auxiliary Heater PreparationCab Chassis Wheelbas or: Black SwitchesExcept Rear Auxiliary Heater PreparationClub Cab 2 door 8' Boxor Black SwitchesExcept Rear Auxiliary Heater PreparationQuad Cab 4DR 8' Box/3-DR Hatchor Black SwitchesExcept Rear Auxiliary Heater PreparationVan Wheelbas or: Black SwitchesExcept Rear Auxiliary Heater PreparationGlazed Van	View on Amazon

This table covers the combination / turn-signal switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Buying Electrical Switch & Relay Parts for a 2018 Ram Promaster Rapid

On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.

Confirm you have the 1.4L L4 engine — every part on this page is matched to it.
Read the notes on each row for position, trim and spec qualifiers before you order.
Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
Cross-reference the manufacturer part number against your old part or a service-manual listing.

Start with the largest groups on this page: Door Lock Switch and A/C Refrigerant Pressure Switch .

Frequently Asked Questions

How many electrical switch & relay parts fit the 2018 Ram Promaster Rapid?

Our catalog currently lists 16 electrical switch & relay parts for the 2018 Ram Promaster Rapid across 8 subcategories and 4 brands, covering the 1.4L L4 engine. Each part is matched to the engine(s) it fits.

What are the signs of electrical switch & relay problems on a 2018 Ram Promaster Rapid?

Common symptoms include accessories that work intermittently, a click without action, or one function dead while its fuse tests fine. 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, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.

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 2018 Ram Promaster Rapid 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 2018 Ram Promaster Rapid?

Every part on this page is matched to the 1.4L L4 engine. Then swap a suspect relay with an identical known-good one from the fuse box before buying — it is the fastest diagnostic there is. The notes column carries position and trim qualifiers where they apply.

Other Parts for the 2018 Ram Promaster Rapid

Body & Lamp Assembly Brake & Wheel Hub Cooling System Electrical Electrical Bulb & Socket Electrical Connector Engine Exhaust & Emission Fuel & Air Heat & Air Conditioning Ignition Interior Steering Suspension Manual Transmission Wheel Wiper & Washer

Electrical Switch & Relay Parts for Other Ram Promaster Rapid Years

2024 Ram Promaster Rapid 2023 Ram Promaster Rapid 2022 Ram Promaster Rapid 2021 Ram Promaster Rapid 2020 Ram Promaster Rapid 2019 Ram Promaster Rapid 2017 Ram Promaster Rapid

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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