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What Color Are the Brake Lights On A 4-Way Flat Plug Of Wishbone Wiring Harness?


Wat color is the brake lights wire??4 wire flat plug


Expert Reply:

The brake signal is run along with the blinker on separate wires. The passenger side is normally green and carries the right turn and brake light. The driver's side is normally yellow and carries the left turn signal and brake. The remaining functions are running/tail lights on the brown wire and the ground which is the white wire. I've attached an article to assist.

A wishbone harness like # A20WB will give you two brown wires so you don't need to run a jump wire from one side of the trailer to the other for your running lights. It separates it at the connection so you can run one brown wire down each side so there is not need to connect anything side to side. I've attached an installation video to assist.

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Follow up Questions

Leland C.

I wire my trailer left side came on like supposed to but the right side not coming on I wire it right side brown and brown and green on green

Etrailer Expert
Reply from Chris R.

Have you verified that you're getting power from the tow vehicle on the right side circuit? Test the tow vehicle connector first, just to rule it out as being the issue. If you get appropriate power the you'll just need to inspect the wiring on your trailer - from the connector back to the tail lights - to see if there are any pinched or damaged sections of wire that need to be replaced.

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