How Do Utility Trailer Lights Wire Up to the Trailer Wiring Harness.

Question

Question:

My new lights on trailer has black an red , I need to know witch colors go to red and what to black ? My harness has brown , green , yellow , white

asked by: Ken S

0

Expert Reply:

The red wire is the turn signal wire and will be run to the green wire of your harness if its the right turn signal side, and the black wire will run to the brown wire of your harness. The yellow wire from your harness will run to the left turn signal red wire. The brown wire will also run to the black wire of this light also.

I attached an FAQ on trailer wiring for you to check out also.

expert reply by: Jameson C

0

Bob8

2/12/2020

2 wires both green from trailer. 1 green and 1 black wire on new tail light. How to hook up?

Jacob H.

2/14/2020

The best way to handle this would be to test your wires on your trailer and see which green wire is doing what. I recommend marking them with a piece of electrical tap to know the difference for future reference. You can then hook your light wires up to a 12V battery and see what functions work with the wires.

Graham

2/2/2021

Hi I hope you can help me on the one as I'm trying to connect new lights on my boat trailer and dont know what wire to connect to what wire The trailer has a yellow brown white and red wire while the LED light has a red white green brown and brown and white wire what connects to what

Jon G.

2/2/2021

@Graham Trailer wiring colors can vary from application to application. Your best bet is to figure out which wire carries what function on your trailer wiring and then connect the corresponding wires from your LED lights correctly. You can accomplish this by hooking your trailer up to your tow vehicle and then using a circuit tester to test the wires while you run through the various light functions.

John B.

6/6/2020

I need 2 know how 2 wire a 4 flat on a 2002 chevy tahoe for my trailer Thank u for yas time

Amanda C.

6/14/2020

I have a tail light with a red wire, and a trailer with a green, brown, yellow, and white wire. Where would I attach the red wire to? I thought I would attach it to the brown wire since my brown wire is my light function wire but when I attached it on my tail light did not work. I need help asap!

Chris R.

6/18/2020

Are there any other wires coming from the tail light? It's hard to go just by color alone because not all light assemblies use the same schematic. The brown wire on your trailer would be for running lights.

Answer 1

This is a common question we get on lights like the LED Trailer Tail Light with License Bracket part #328-003-81LBM1. The original colors you have are the traditional trailer wiring code so brown=taillights, red=turn/brake and white is ground. On…

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Answer 2

It is likely that the red wire on your old lights is the turn signal/brake light wire, and the black wire is the running light wire. That would make the white wire the ground. You can verify this by testing the wires using a circuit tester such as…

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Answer 3

Red, black, and white wires are common on many tail light assemblies. When this is the case, you will have red as stop and turn, black as running light, and white as ground. So you will connect yellow to red on one side of the trailer and green to…

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Answer 4

Most likely the colors would match with the exception of the red wire on the trailer going to the white wire on the truck. The white wire is the ground circuit so you can trace the RED wire on the TRAILER to see if it attaches to a metal surface on…

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Answer 5

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 6

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 7

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 8

Hi Paul, you’re definitely on the right track here, and I can help you narrow this down with confidence. With your tandem 3,500 lb Dexter axles and 33 inch spacing, both the Dexter EZ Flex part #K71-652-00 and the Lippert Road Armor part #LC53CK are…

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Answer 9

Hey Bryan, that's a good question. The pricing can definitely be misleading, but I wouldn't use it to judge the quality of the tire. A lot of that comes down to promotions, inventory, and whether you're looking at a tire by itself or…

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Answer 10

Hey Jonathon thank you so much for all of that additional information! To haul your bikes behind your class C Sprinter motorhome, while flat towing your Mini, I recommend the Hollywood Racks RV Rider Bike Rack item #HLY64FR and the Roadmaster Dual…

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Answer 11

Yes, it will work. You'll just need to cut the Lance 6-pin connector out and rewire it into the etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector item #e99011. Here are the individual functions of that Lance 6-pin:…

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Answer 12

The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th…

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How Do Utility Trailer Lights Wire Up to the Trailer Wiring Harness.

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