Recommended 5-Way Adapter for Vehicle 4-Way Trailer Connector Wiring Harness to Work With Trailer

Question

Question:

My wiring on my trailer is 4 way but it has 5 wire how do I connect it to a 4 way with 4 wire. Color wire is white,brown,yellow/brown,yellow,green.

asked by: Jerry

0

Expert Reply:

For your trailer with 5-way flat connector to connect to your vehicle 4-way flat, I recommend the Curt Trailer Connector Adapter - 4-Way Flat to 5-Way Flat - Vehicle End # C57187 or the Tow Ready # 20036. The blue wire will connect to your reverse light wire at your tail light utilizing the quick connect supplied with this adapter.

expert reply by: Jason S

0

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Jerry

12/8/2017

My wiring on my trailer is 4 way but it has 5 wire how do I connect it to a 4 way with 4 wire. Color wire is white,brown,yellow/brown,yellow,green.

Jason S.

12/8/2017

It is likely that the brown and yellow brown are both running light circuits with one run to each side of the trailer. They call this a wishbone harness like # A35W42B because it makes that running light wire split at the connector instead of running a jump wire from one side of the trailer frame to the other at the light location. Check the functions using a battery to isolate function and location to confirm because the colors aren't a perfect match. I've attached an article to assist. If this is the case, you can simply splice the 5 wires into a 4 wire connector like the Hopkins Endurance Easy-Pull Harness w/ 4-Pole Flat Connector - Trailer End - Jacketed - 48" # HM38134. If that 5th wire on your trailer activates a reverse light, then you have a 5-way and will need to add the adapter # 20036.

Answer 1

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Answer 2

If your trailer has 7 wires running all the way back to the brakes, then yes, you can tap into the existing wiring. Each of your new brakes will have two wires for the brake magnet. One wire is for 12 volt power to the brake magnets and the other…

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Answer 3

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Answer 4

I have a great 5-way solution for you. Unfortunately, we do not make a 5-way customized harness, but we do carry the parts needed to create one for your application. For this route on your 2021 Jeep Wrangler without a factory tow package, I recommend…

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Answer 5

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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

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Answer 9

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Answer 10

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 11

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Answer 12

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

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Recommended 5-Way Adapter for Vehicle 4-Way Trailer Connector Wiring Harness to Work With Trailer

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