Trailer Wiring Diagram and Color Chart

This diagram shows the colors of a basic trailer wiring setup to the connector and what each wire is supposed to be connected to. Use it to install or repair trailer wiring. The will show what color is what, i.e. What does the brown wire go to?

Trailer Wiring Colors

• Brown wire to the tail or parking lights
• Green wire to right turn signal/stoplight
• Yellow wire to the left turn signal/stoplight
• White wire to common or chassis ground