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How do I ground my Standard 4-Way Y Harness on my Trailer  

Question:

Wont this be grounded through the harness to the tow vehicles grounded harness? The application I am using has no place to ground it other than through the harness.

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Expert Reply:

Yes you are right on track here. The Standard Trailer Light Kit with 25' Wire Harness part # TL29BK has a single white wire that need to be connected to trailer. This wire provides the ground connection from your tow vehicle to the trailer once that is done all of the light ground themselves to the trailer through the metal studs used to connect them.

Attach the white ground wire directly to a clean, bare section of the trailer frame using a self-tapping screw and ring terminal. For best performance, each component should have its own ground. For instance, each trailer light should be grounded separately along the trailer frame. This reduces the risk of a ground issue on one component impacting the whole wiring system. You can make these individual ground connections in step 4, when you connect the rest of your wires.

I've included a link to the Trailer wiring guide to help explain anything that may come up while you install it.

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Randy B

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