How to Wire Optronics Trailer Tail Light # STL70RB
Question:
The lights come with a Red, Black, and White wires when you purchase the plug. How do you wire these to a four-way trailer harness? Green, Yellow, Brown, White. Thanks
asked by: ED
Expert Reply:
The 3-Wire Pigtail # A45PB for the Optronics Trailer Taillight # STL70RB that you referenced features a black wire for the tail/running lights, a red wire for the turn/brake signal, and a white wire for ground. It's very likely that on your trailer the green wire is for right turn/brake lights, the yellow wire is for left turn/brake lights, and the brown wire is for running lights.
Since trailer wiring isn't standardized, it is still a good idea to test the wires on your trailer for function using a circuit tester like # PTW2992 just to be sure.

Products Referenced in This Question
3-Wire Pigtail for Optronics Trailer Lights - 3-Prong PL-3 Plug - 10" Lead
- Accessories and Parts
- Trailer Lights
- Wiring
- Plugs and Pigtails
- 10 Inch Long
- Three Wire
- Straight Pigtail
- Optronics
more information >
Product Page this Question was Asked From
Optronics LED Trailer Light - Brake, Tail, Turn - Submersible - Oval - Red
- Trailer Lights
- Tail Lights
- Stop/Turn/Tail
- Oval
- Recessed Mount
- Submersible Lights
- LED Light
- 6-1/2L x 2W Inch
- Red
- Optronics
more information >
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