How to Wire Trailer Clearance Lights with Black and Red Wires
Updated 08/05/2024 | Published 10/07/2019 >
Question:
Hi, marker lights have a two cables black and red,what we should connect to them brown cable and white cable?
asked by: Jan D
Expert Reply:
The brown wire for your trailer wiring should be for the running lights while the white wire should be for ground. Typically clearance lights use black for power and white for ground, like part # MCL32AB, but in the case of black and red wiring the black is typically ground while the red is for power.
This can vary between products but you can simply touch the black power from the light to the white wire from the trailer wiring and then the red wire to your brown wire. If that doesn't work then simply reverse the wiring and your light should work just fine.

Carl H.
8/5/2024
My travel trailer has 1 wire that is white and other is white and green on clearance light. Is white the ground? I am wiring up a camera and cannot experiment

Product Page this Question was Asked From
LED Trailer Clearance or Side Marker Light w/ Reflex Reflector- 3 Diodes - White Base - Amber Lens
- Trailer Lights
- Clearance Lights
- Marker
- Rectangle
- Surface Mount
- Non-Submersible Lights
- LED Light
- 4L x 2W Inch
- Amber
- Optronics
more information >
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Great W.
10/29/2021
Helped answer my question thank You