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Does Bar Light at Rear of Trailer Typically Carry Running Light or Stop Light Circuit  

Question:

I am rewriting a trailer with a 4 wire harness, the trailer has a center bar light below the gate. Is the bar light a running light or does it work as a brake light?

1

Helpful Expert Reply:

Most likely it's a running light. Typically a center bar is a clearance light that runs to the running light circuit. Wiring in a third brake light to a trailer is somewhat involved as you have to use a signal converter like part # 118158 to separate out the brake circuit from the turn signals.

I attached an install video for this converter for you to check out as well.

expert reply by:
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Jameson C

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