11 Electrical connector parts are listed for the 1972 Checker Marathon, in 5 part types, covering both the 4.1L 250cid L6 and the 5.7L 350cid V8. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 1972 Checker Marathon, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. 9 parts of the 11 listed are Headlamp Dimmer Switch Connector (4 parts), Voltage Regulator Connector (4 parts) and Flasher Connector (1 part). The other 2 part types cover the remaining 2 parts.
The 1972 Checker Marathon was sold with both the 4.1L 250cid L6 and the 5.7L 350cid V8. All 11 parts on this page fit every engine.
6 brands supply electrical connector parts for the 1972 Checker Marathon, led by STANDARD MOTOR PRODUCTS (4 parts), UNITED MOTOR PRODUCTS (2 parts) and WELLS (2 parts), plus 3 more brands.
Each part number listed for the 1972 Checker Marathon opens a page with every vehicle that part fits.
Flasher Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 1972 Marathon engines | S957 | 🇺🇸 US 🇨🇦 CA | Terminal Quantity: 2 | View on Amazon |
This table covers the harness connectors at the Flasher. 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.
One part is listed for the 1972 Checker Marathon — STANDARD MOTOR PRODUCTS S957.
Fuel Pump CutOff Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 1972 Marathon engines | S2212 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Fuel Pump CutOff 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.
One part is listed for the 1972 Checker Marathon — STANDARD MOTOR PRODUCTS S2212.
Headlamp Dimmer Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: all 1972 Marathon engines | PT1994 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 1972 Marathon engines | HP3920 | 🇺🇸 US 🇨🇦 CA | Handy PackBlack | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 1972 Marathon engines | S72 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: all 1972 Marathon engines | CON139 | 🇺🇸 US 🇨🇦 CA | Headlamp Dimmer | View on Amazon |
This table covers the harness connectors at the Headlamp Dimmer 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.
4 Headlamp Dimmer Switch Connector parts for the 1972 Checker Marathon come from 3 brands — STANDARD MOTOR PRODUCTS, ACDELCO and UNITED MOTOR PRODUCTS. Every part fits both the 4.1L 250cid L6 and the 5.7L 350cid V8.
Part numbers include ACDELCO PT1994, STANDARD MOTOR PRODUCTS HP3920 and STANDARD MOTOR PRODUCTS S72, among others listed above.
Voltage Regulator Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: all 1972 Marathon engines | 610276 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| UNITED MOTOR PRODUCTS Fits: all 1972 Marathon engines | CON159 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: all 1972 Marathon engines | 1P1019 | 🇺🇸 US 🇨🇦 CA | with 2 Terminals | View on Amazon |
| WELLS Fits: all 1972 Marathon engines | 1P1066 | 🇺🇸 US 🇨🇦 CA | with 4 Terminals | View on Amazon |
This table covers the harness connectors at the Voltage Regulator. 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.
4 Voltage Regulator Connector parts are listed for the 1972 Checker Marathon, from WELLS, ROSTRA and UNITED MOTOR PRODUCTS. All of them fit every engine offered in the 1972 Marathon.
Listed part numbers: ROSTRA 610276, UNITED MOTOR PRODUCTS CON159 and WELLS 1P1019, plus the other parts above.
Washer Pump Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAI GLOBAL Fits: all 1972 Marathon engines | 399002 | 🇺🇸 US 🇨🇦 CA | AccessoryUniversal Switch for Washer Pump System | View on Amazon |
This table covers the harness connectors at the Washer Pump. 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.
This group shows a single part: WAI GLOBAL 399002.
Buying Electrical Connector Parts for a 1972 Checker Marathon
On this vehicle, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules.
- You do not need to pick an engine: every electrical connector part on this page fits both the 4.1L 250cid L6 and the 5.7L 350cid V8.
- 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: Headlamp Dimmer Switch Connector and Voltage Regulator Connector .
Frequently Asked Questions
How many electrical connector parts fit the 1972 Checker Marathon?
Our catalog currently lists 11 electrical connector parts for the 1972 Checker Marathon across 5 subcategories and 6 brands, covering both the 4.1L 250cid L6 and the 5.7L 350cid V8. Each part is matched to the engine(s) it fits.
Do electrical connector parts differ between 1972 Checker Marathon engines?
No. On this page every electrical connector part fits both the 4.1L 250cid L6 and the 5.7L 350cid V8. You do not need to pick an engine to choose the right row — use the notes for position and trim.
What are the signs of electrical connector problems on a 1972 Checker Marathon?
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 1972 Checker Marathon 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 1972 Checker Marathon?
Every part on this page already fits both the 4.1L 250cid L6 and the 5.7L 350cid V8. 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 1972 Checker Marathon
Electrical Connector Parts for Other Checker Marathon Years
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