Troubleshooting LED Trailer Lights Not Functioning Correctly

Question

Question:

I am using my oem wires on the lights. The brake and turn hooked up to the red, when I turn on the turn signals it backfeeds and everything blinks. When I have the turns on the brake lights over ride it.

asked by: Keith N

0

Expert Reply:

The Thinline LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 11 Diodes - Red Lens # STL69RB sounds like the ground wire is not connected to a clean connection. It should be bare metal to metal and free of corrosion or debris. If your clearance lights are blinking, it is most definitely a ground issue and maybe your main trailer ground needs to be looked at as well.

expert reply by: Jason S

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Answer 1

We don't carry lights with those colors, so you will need to test them based on function. Normally black and red are power and white is ground like you see in the #STL69RB. I would try the yellow as ground. Red is most likely the turn signal and…

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Answer 2

On your new lights 3 wire LED bar you will likely connect the brown wire to black, the green wire to red, and the white wire to ground on your trailer frame. On your current wiring, the brown is likely the running light circuit and the green is your…

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Answer 3

The Ultra-Fab 5th Wheel King Pin Tripod Stabilizer part #UF19-950200 would be best for harsher environments. The Ultra-Fab 5th Wheel King Pin Tripod Stabilizer part #UF19-950600 has a black coating which will also resists rust but if this coating…

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Answer 4

Yes you can use the Ultra Fab 5th Wheel King Pin Tripod Stabilizer part #UF19-950600 with a Trailair pin box like you mentioned. The air bag of your Trailair would not cause any issues with this. The pin box would be supported by this adapter just as…

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Answer 5

The brake output circuit of your vehicle/trailer wiring wouldn't be an ideal circuit to power the third brake light of a trailer unless you wanted to modify the circuit on your tow vehicle. You would have to run a brake light circuit straight to…

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Answer 6

From what I could find it looks like your 122R (red) and 122Y (amber) lights measure 3.75" x 1.70" x .81". We don't have any replacement lense directly for the GLO-BRITE lights but we do have some similar lights that you could use…

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Answer 7

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 8

It could be a tow package fuse on the vehicle. Use the owners manual to find the locations of fuses/relays related to the tow package wiring to check them and replace as needed. If the issue is not a fuse or relay then you can test the vehicle side…

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Answer 9

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 10

Since wire color codes are NOT universal, we always recommend wiring by function, rather than wire color. If you look at the Trailer Wiring FAQ article I have linked you to, you can see some diagrams showing the proper way to wire a vehicle and…

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Answer 11

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 12

You will have to go with a sliding hitch to allow the trailer to make tight turns. For a trailer 8 feet wide the only bed length that's going to allow 90 degree turns without a slider is a stationary hitch. That being said you have two options.…

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