How Would Dedicated Third Brake Light Get Wired on Trailer

Question

Question:

How do I wire a third brake light onto my trailer but have it only on when the running lights are on and for the brake? Can it work like that with a converter or do I just have to use it only as a break light? I know I need a converter but Im kind of clueless when it comes to the process

asked by: Kevin M

1

Helpful Expert Reply:

To do that you would need a converter like the part # 118158 that you referenced. You would run the stop/turn circuits of the trailer wiring to the converter by tapping into them so that you could have an isolated stop light circuit for it. You'd run that to the brighter illumination circuit of the light and then you'd run the running light circuit directly to the dimmer illumination circuit of the light bypassing the converter.

expert reply by: Jameson C

1

Answer 1

Hey Paul! To power the 3rd brake light you will need to tap into the yellow and green wires on the towing harness and use the 3rd Brake Light Logic Module #PP20-702 to filter out the turn signals. Older Silverado's had a dedicated wire but it is…

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Answer 2

Since your trailer uses a combined wiring system where the stop and turn signals run on the same circuit, in order to add a third brake light to your trailer you would need to use a 2-Wire to 3-Wire Converter, like part #118158. This will convert the…

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Answer 3

Yes Paul, you'll just want the 3rd Brake Light Logic Module #PP20-702. This wiring harness filters out unwanted turn signal input to make sure your 3rd brake light turns on only when brakes are applied.

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Answer 4

Hey Sue, so the wiring colors you mentioned don't match what the part #PP20-702 have so I am not sure what's going on. This is supposed to have two yellow wires that you run to both stop turn circuits and then the green runs to the isolated…

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Answer 5

In the past, the Vehicle to Vehicle Tail Light Converter part #118158 was recommended to isolate the stop light signal when installing a third brake light. However, this was not the purpose of the converter so certain lights would cause issues…

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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

According to Blue Ox, it'll take an experienced installer about 4 to 5 hours to complete the installation of their #BX1128 Base Plate Kit on a 2016 Jeep Grand Cherokee. The install isn't what I'd call super-difficult, but the installation…

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Answer 8

The 5.30-12 tires, being wider, are going to make more contact with the road. This means that the noise, and heat build up will be higher than a 4.80-12 tire but the rolling resistance will actually be less because the tire is larger diameter. The…

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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

The difference between an load range C and load range D tire in the same size is the capacity and psi rating. The two tires will still have the same dimensions and fit on the same wheel. The D rated tire has a higher capacity. For a ST175/80D13 like…

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Answer 11

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 12

The two sizes you mentioned are pretty similar and fit many of the same 15 inch wheels. The 205/75-15 fits rim widths of 5 inch to 6 inch whereas the 225/75-15 fits widths that are 5 inch to 6-1/2 inch. The 205 is 27.1 inches tall and the 225 is 28.4…

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How Would Dedicated Third Brake Light Get Wired on Trailer

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