Trailer Plug is a 4-Way Flat But there are 6 Wires

Question

Question:

My trailer has a white green yellow and brown my trailer lights have a white green yellow and to Browns what do I do

asked by: Paul

0

Expert Reply:

It sounds like your trailer had a wishbone harness and/or could have multiple ground wires. On a 4-Way trailer end, the one covered pin is the ground. Next to that is the running light pin. The running light pin on some connectors will have more than 1 wire coming out. One of those wires is for the driver's side running lights and the other is for the passenger's side running lights. So it could be a situation like that.

On the actual trailer lights look at where the wires go into the lights. The functions might be labeled on the light housing.

Usually, white wires are grounds, green is right turn signal/brake lights, yellow is left turn signal/brake lights, and brown is running lights.

If you'd like you can snap some pictures of what you're seeing and email them to me.

expert reply by: Michael H

0

Micheal C.

2/11/2020

I have a trailer with a yellow, yellow brown,green, green with brown,brown wire, white how do wire to 4 wire plug.

Reply

Jacob H.

2/12/2020

It sounds like your trailer has a wishbone harness. A wishbone harness splits the running light circuit at the connector so you do not have to run a jumper from one side of the trailer to the other side. On a wishbone 4-Way connector the white wire is ground, yellow is left turn signal, yellow/brown is left side running lights, green is right turn signal, and green/brown is right side running lights. If there is a 5th pin then this most likely goes to an electric reverse lockout solenoid for hydraulic brakes, typically found on boat trailers. It could also be electric brake if the trailer is not a boat trailer but is still equipped with brakes. If the trailer is not equipped with breaks at all then it is most likely a reverse light signal. Lastly, it could be a 12V power wire run for any accessories that might be on the trailer. To wire up your trailer you will need # 20036. I have linked a helpful article to help you get it wired up correctly.

Helpful Links

faq-wiring.aspx

Wiring/Tow-Ready/20036.html

Reply

David B.

3/27/2021

Problem: 6 wires coming from trailer, 4 wires from vehicle pin connector. Solution : Simply connect colors together, All brown together with brown, and all white together with white. Green with green, yellow with yellow. Reason: Two ground (white) one for each side. Marker and tail lights (brown) one for each side. (Green) right stop and turn (Yellow) left stop and turn. On some aluminum trailers, there is no visible ground on the tongue. The ground wire runs to the individual lights, thus the need for one on each side. Source : School of Hard Knocks

Reply

Kef G.

3/30/2021

@DavidB While it's likely in your situation that matching the colors will work out, it's always important to remember that this isn't always the case. That's why we recommend verifying the functions for each wire and going that route. Sometimes the colors don't end up matching since many manufacturers like to use their own color schemes.

Reply

See All (5) Replies to Micheal C. ∨

Answer 1

Hey Dave, The Curt Custom Tail Light Wiring Kit for Towed Vehicles #C96JR would not be intertwined or interfere with the Blue Ox Patriot #BLU37TR. This wire harness is simply plugging into the motorhome and Gladiator tail lights to copy the light…

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Answer 2

The easiest to use and highest quality base plate kit that fits your 2023 Jeep Gladiator is the Blue Ox part #BLU53FR which would work great with a tow bar like the #BX7420. We do have custom fit lighting solutions like the Curt part #C96JR that…

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Answer 3

Yes, we have the Curt tow bar wiring kit part #C96JR that is a confirmed fit for your 24 Wrangler. This installs by plugging inline with your taillight connectors which means it does not need any splicing.

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Answer 4

The Curt Custom Tail Light Wiring Kit #C96JR is what you will need to connect your tail lights on your 2023 Jeep Wrangler to operate of the tail lights on your motorhome. This will have a 4-way flat connector which plugs into the motorhome or you…

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Answer 5

Since you have six wires it sounds to me like you have a double ground and a left and a right side tail light wire. If this is the case you could use a wishbone harness like the 20 ft. Wishbone 4-Way Trailer Wiring Harness with 30" Ground Wire,…

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Answer 6

The 25 Ft 4-Way Trailer Wiring Harness #A25W2GWB you found is going to have the 3 wires which run down each side of the trailer. One wire on each side is going to be a ground wire(white), the 2nd wire(brown) is going to be for the running lights and…

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Answer 7

The Curt Custom Tail Light Wiring Kit for Towed Vehicles #C96JR is designed to plug into select Jeep Wrangler's and Gladiators in order to display a motorhome's traffic signals through the taillights on the Jeep to remain street legal. What…

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Answer 8

I do have an installation video of base plates being install on a 2020 Jeep Wrangler Unlimited which I have attached for you. However, we have not yet had the opportunity to install the Roadmaster Direct-Connect Base Plate Kit part #RM-521453-5 on a…

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Answer 9

Your 4-pin/5-wire wiring harness is what is called a "wishbone" type which simply means that there are two separate running light wires, one brown and one pink. This allows a separate running light wire for each side of the trailer which…

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Answer 10

It sounds like you have something similar to a wishbone wiring harness with 2 running light circuits and then also 2 ground circuits. To replace this, I recommend the Hopkins Endurance Quick-Fix Replacement 4-Way Flat Trailer Connector w LED Test…

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Answer 11

Typically, the wire colors are brown for running lights, green for right turn and brake lights, and yellow for left turn and brake lights. White is ground. To confirm this on a trailer you can trace the wires back to see where they terminate or take…

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Answer 12

It sounds like you have a wishbone wiring harness install on your trailer. A regular 4-way wiring harness has 4 wires from the back of the connector, 1 for left turn/brake typically (yellow), 1 for the right turn/brake typically (green), 1 for the…

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Trailer Plug is a 4-Way Flat But there are 6 Wires

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