Trailer Brake Controller Wiring Colors

For more information on wiring in a brake controller check out the help article i attached that covers this.

Trailer brake controller wiring colors.

If you have never done wiring on a car before you might not want to attempt this install as your first wiring project. Splice the wires from the vehicle to the brake controller harness matching the colors as follows. Then you have the two wires left the green and the brown. The brake controller comes with a wiring harness that is the kind you have to splice into your vehicle s wiring.

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. Traditional trailer with brakes use a 5 pin connector. There will be four wires each separately labeled on the harness. And then you have the extra wire here which is labeled illumination feed.

The 5th pin a blue wire gives power to operate or disable the trailer brakes. 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. 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. 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.

The trailer brake control and additional plug in wiring harness. 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. The wires exiting the rear of your controller serve the following functions. Connect the brake controller harness to the electronic brake controller using barrel crimp connectors.

The first wire black runs to the vehicle s battery to supply power to the trailer connector. The red wire on the controller will attach to the lead from the brake light switch. Click for more info and reviews of this tekonsha trailer brake controller. So that would go to black the 12 volt power supply wire on the brake controller.

1 4 wire the first 4 pins white brown yellow green just like the 4 pin connector above. Connect the ground wire to the white wire on controller will attach to the ground on the harness.