Trailer Wire Color Code 7. Our trailer wiring diagram is a colour coded guide designed to help you wire your trailer plug or socket. There is a lot wiring that you have to tie into your truck's wiring harness, but it is easier to do than it seems.
Our general-purpose primary wires are covered in a high quality, PVC jacket. Just remember match it to function For now I'm just going to match them up color for color on our junction box. Understand electrical wire color codes when wiring a switch or outlet.
The right turn wire is green, left turn is yellow, the ground wire is white, the tail/marker is brown, the brake is blue, the battery is red or black, and the back up is purple.
Electrical Wire Color Codes - What Each Color Indicates.
Most trailer lights use this color code Wht--Ground Black--positive for light function (i.e. tail or marker lights) Red--positive for signal function (i.e. brake lights or turn signals). So you can repeat that same exact process for all the wires. There is no standard color code for the wiring of a transformer.