How To Wire License Plate Light/Bracket With 3 Wire Connection
Published 04/25/2024
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Question:
Connecting bracket license plate light with yellow black and red wires. What do I connect to on a 4 pin connector. Also if I dont use all 4 wires on 4 pin do I just cut it off?
asked by: Frank
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Expert Reply:
Most Trailer License Plate Lights with a Bracket like the Optronics # LPL55CB you found are only going to have 2 wires a power and ground for the light. It looks like yours has either an additional light for either a reverse light or brake light. While I cannot tell who manufactured your light you are most likely going to have to test the light with a 12 volt battery to determine which wires are power and for which function and which is the ground. Typically white or black are the most common ground wires so that is going to be the best place for you to start your test. On a 4-Way # HM38138 the white will be for the ground and brown for the running light for the license plate. The yellow is for the left turn signal/brake light and the green is for the right turn signal/brake light.
Product Page this Question was Asked From
Optronics LED Trailer License Plate Light w/ Bracket - 5 Diodes - Clear Lens
- Trailer Lights
- License Plate Lights
- Rectangle
- Surface Mount
- Non-Submersible Lights
- LED Light
- 8-5/8L x 3-1/4W Inch
- White
- Optronics
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Frank
4/25/2024
One ground and ones running light. The yellow is for brake light . So my question is to spliceonto a 4 pin should I connect yellow, a three way splice between the turn signal wires and the yellow on plate lite.