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Trailer Light Adapter Harnesses

Add Trailer Lighting Without Cutting Or Splicing Into Your Stock Harness

Designed for 1962-1982 Chevy & GMC Trucks
Trailer Light Adapter Harness
Plug-and-Play Installation With Original Style Connectors

M&H's Trailer Light Adapter Harnesses allow owners of 1962 through 1982 Chevy and GMC Step Side and Fleet Side trucks to add trailer lighting in minutes. The adapter connects directly between the Rear Lamp Intermediate Harness and the Rear Lamp Harness with no cutting, splicing, or modifications to the original wiring.

Each adapter features correct weather-resistant molded-on mating connectors that fit the original factory harnesses perfectly. The long leads route to the trailer connection on the bumper or any user-defined location, providing circuits for tail, brake, left and right turn signals, and backup lamps. Leads are color-coded to industry standards to simplify installation, and an instruction sheet is included with every harness.

No Splicing Required

Plugs directly between the Intermediate and Rear Lamp harnesses using original style connectors, preserving the factory wiring.

Covers 20 Model Years

Two part numbers cover 1962 through 1982 Chevy and GMC Step Side and Fleet Side trucks.

Check Out These Outstanding Features

  • Original Style Connectors
    Features correct weather-resistant molded-on mating connectors that fit directly between the Rear Lamp Intermediate Harness and Rear Lamp Harness.
  • No Modifications Required
    Plug-and-play design installs without cutting, splicing, or altering the original factory wiring in any way.
  • Complete Trailer Circuit Coverage
    Provides connections for tail, brake, left and right turn signals, and backup lamps for full-function trailer lighting.
  • Color-Coded To Industry Standards
    Leads are color-coded to standard trailer wiring conventions to simplify connection to any trailer plug or user-defined location.
  • Long Leads For Flexible Routing
    Extended lead length allows the harness to run to the trailer connection at the bumper or any other convenient mounting location.
  • Installation Instructions Included
    Each adapter harness ships with a printed installation instruction sheet to guide the restorer through the process.

Part Numbers and Pricing

M&H Part 39375 Product Image
M&H Part Number: 39375
1962-1966 Chevy & GMC Truck

Trailer Light Adapter Harness for 1962-1966 Chevy and GMC Step Side and Fleet Side trucks. Plugs between the Intermediate and Rear Lamp Harnesses.

$98.00

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M&H Part 39374 Product Image
M&H Part Number: 39374
1967-1982 Chevy & GMC Truck

Trailer Light Adapter Harness for 1967-1982 Chevy and GMC Step Side and Fleet Side trucks. Plugs between the Intermediate and Rear Lamp Harnesses.

$98.00

View Complete Fitment Details

Local Pickup Available

Free Technical Support

Hassle Free Returns