Wiring Up A Trailer Lights. Side marker lights are powered by the brown wire. The left brake wire and left turn signal are yellow.
This is just a standard 4 way connector with a ground parking. The 4 way system is designed so the right brake light wire and right turn signal are green. Trailer side step 1.
Prepare for trailer wiring installation start by making sure you have everything you need to wire your trailer.
If you own an older vehicle chances are it will have neither trailer package factory installed nor t connectors available for it. It is referred to as such as the system needs a mere four wires for the trailer tail lights turn signals and brake lights to illuminate. Prepare for trailer wiring installation start by making sure you have everything you need to wire your trailer. The 4 way system is designed so the right brake light wire and right turn signal are green.
