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Which Wire is for Power and Ground on the Optronics Trailer Clearance or Side Marker Light OPT57WR?  

Published 11/12/2023

Question:

Which wire is for the ground and which one is for power

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Expert Reply:

Black is for power and white is for ground on the Trailer Clearance or Side Marker Light w/ Reflector item # OPT57WR. This light measures 4" long x 2-1/16" tall x 1-3/32" deep and has mounting holes 3" on center.

We also have this light available in amber Trailer Clearance or Side Marker Light w/ Reflector item # OPT37WR.

expert reply by:
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Jerred H

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