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Written by Hitchweb Team
Friday, April 2, 2021 — 6 Comments
Friday, April 2, 2021 — 6 Comments
Over the years manufacturers have changed the wire colors on vehicles. The below diagrams show what vehicle manufacturer has as each wire function:
| Standard Wire Function Dual Bulb System |
Wire Color |
| Right Turn & Brake Lights | Green |
| Left Turn & Brake Lights | Yellow |
| Tail Lights | Brown |
| Ground | White |
| Single Purpose System | |
| Brake Lights | Use Converter |
| Backup Lights | Red |
| Electric Trailer Brakes | Connect To Blue Wire From Brake Controller |
| Standard Wire Function Dual Purpose Bulb System |
Ford Wire Colour |
| Right Turn & Brake Lights | Orange with Blue Stripe |
| Left Turn & Brake Lights | Light Green with Orange Stripe |
| Tail Lights | Brown |
| Ground | Black or Grey |
| Single Purpose System | |
| Brake Lights | Red with Green Stripe |
| Backup Lights | Black with Pink |
| Electric Trailer Brakes |
Connect To Blue Wire From Brake Controller |
|
Wire Function |
GMC Wire Colour |
| Right Turn & Brake Lights | Green |
| Left Turn & Brake Lights | Yellow |
| Tail Lights | Brown |
| Ground | Black |
| Single Purpose System | |
| Brake Lights | Pink or Light Blue |
| Backup Lights | Light Green |
| Electric Trailer Brakes | Connect To Blue Wire From Brake Controller |
| Wire Function Dual Bulb System |
Honda Wire Colour |
| Right Turn & Brake Lights | Green with Yellow Stripe |
| Left Turn & Brake Lights | Green with Blue Stripe |
| Tail Lights | Red with Black Stripe |
| Ground | Black |
| Single Purpose System | |
| Brake Lights | Green with White Stripe |
| Backup Lights | - |
| Electric Trailer Brakes | Connect To Blue Wire From Brake Controller |
| Wire Function Dual Bulb System |
Jeep Wire Colour |
| Right Turn & Brake Lights | Brown |
| Left Turn & Brake Lights | Grey with Black Stripe |
| Tail Lights | Blue |
| Ground | Black |
| Single Purpose System | |
| Brake Lights | Blue with Black Stripe |
| Backup Lights | Brown |
| Electric Trailer Brakes | Connect To Blue Wire From Brake Controller |
| Wire Function Dual Bulb System |
Mazda Wire Colour |
| Right Turn & Brake Lights | Green with Yellow Stripe |
| Left Turn & Brake Lights | Black Stripe |
| Tail Lights | Green or Black Stripe |
| Ground | Black |
| Single Purpose System | |
| Brake Lights | Green or Green with Red Stripe |
| Backup Lights | - |
| Electric Trailer Brakes | Connect To Blue Wire From Brake Controller |
| Wire Function Dual Bulb System |
Toyota Wire Colour |
| Right Turn & Brake Lights | Green with Yellow Stripe |
| Left Turn & Brake Lights | Green with Black Stripe |
| Tail Lights | Red with Green Stripe |
| Ground | Black or White |
| Single Purpose System | |
| Brake Lights | Green with Red or White Stripe |
| Backup Lights | - |
| Electric Trailer Brakes | Connect To Blue Wire From Brake Controller |
Note** It is recommended that a circuit tester be used on the tow vehicle's wiring harness to verify that the correct wire has been located for the proper function.
Posted in Towing 101
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