Wire Color By Manufacturer

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Wire Color By Manufacturer

Written by Hitchweb Team
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 Generic Wire Color Wire Function Diagram Cars Trucks Wiring

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

Ford Wire Function Wire Color Diagram

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

GMC Wire Function Wire Color Diagram

Wire Function Dual Purpose Bulb System	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

Honda Wire Color Wire Function Diagram

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

Jeep Wire Function Wire Color Diagram

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

Mazda Wire Color Wire Function Diagram

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

Toyota Wire Color Wire Function Diagram

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

Comments

Hitchweb Team

Wednesday, February 14, 2018

Hello there - I checked with CURT Manufacturing to see if they could help figure this out, but they are confused as well. It might be best if you contacted them direct, and photos will definitely help! You can call them toll free at 1-800-798-0813. Thank you! Hitchweb Team

paul

Friday, February 9, 2018

hi if anyone could help with this!!! blue with orange stripe 2013 ford explorer its in the left front engine compartment impact sensor and horn splits off from the same bundle run

Hitchweb Team

Friday, April 7, 2017

Hi Butch, Sorry we've tried all our tech contacts and looked through wiring schematics but we unfortunately can't pin down what this wire is for. We recommend calling Ford directly and hopefully they can help you out! Sorry we couldn't be more help on this one, but if we can look into anything us please contact us at info@hitchweb.com Thank you, Hitchweb Team

Butch blanchard

Friday, April 7, 2017

On my 2009 f-350 dump I put on a new tail light. It has 3 wires out of tail but 4 on the truck. I can't figure where the black with white stripe goes

Hitchweb Team

Tuesday, March 14, 2017

Hi there - we'd be happy to look into this further for you! Would you please let us know the make/model of your vehicle so we can follow up with an electrical tech? You can reply here or send the info to info@hitchweb.com Thank you! Hitchweb Team

Anonymous

Tuesday, March 14, 2017

I have a brown wit white stripe and grey wit black stripe and black and grey stripe in the in dash what do they mean

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Wire Color By Manufacturer

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