Trailer Brake Controller Wiring Colors

The green is labeled stop lamp so that will go to the stop lamp circuit on your brake controller which in our case will be red.

Trailer brake controller wiring colors.

There will be four wires each separately labeled on the harness. Connect the ground wire to the white wire on controller will attach to the ground on the harness. This wire is called the 12 volt hot lead the second wire blue runs to the brake controller to supply power to the trailer brakes. If you have never done wiring on a car before you might not want to attempt this install as your first wiring project.

So that would go to black the 12 volt power supply wire on the brake controller. Blue vehicle wire to blue brake controller wire red 12 volt vehicle wire to black brake controller wire white vehicle wire to white brake controller wire. Wiring a 7 way trailer connector if existing wire colors dont match troubleshooting the 12 volt power circuit on the 7 way of a 2008 chevy silverado 2500 troubleshooting brake controller in 2016 chevy silverado that stopped working. Traditional trailer with brakes use a 5 pin connector.

The wires exiting the rear of your controller serve the following functions. The 5th pin a blue wire gives power to operate or disable the trailer brakes. 1 4 wire the first 4 pins white brown yellow green just like the 4 pin connector above. The brake controller comes with a wiring harness that is the kind you have to splice into your vehicle s wiring.

The first wire black runs to the vehicle s battery to supply power to the trailer connector. The traditional wire colors for brake controller installation are white for ground black for 12 volt power red for stoplight switch and blue for brake output. For more information on wiring in a brake controller check out the help article i attached that covers this. Splice the wires from the vehicle to the brake controller harness matching the colors as follows.

The blue wires carries the brake output from the controller the white wire is the ground the black wire supplies 12 volt power and the red wire is tied into the vehicle brake wiring. And then you have the extra wire here which is labeled illumination feed. The red wire on the controller will attach to the lead from the brake light switch. Then you have the two wires left the green and the brown.

The colors of the remaining four wires. The trailer brake control and additional plug in wiring harness.