How to Connect Hopkins Reliance Brake Controller to Toyota OEM Brake Controller Pigtail  

Question:

Expert Reply:

It sounds like you have the Toyota OEM brake controller pigtail. My industry contacts haven't encountered the OEM pigtail from the Tundra yet, so they weren't able to provide any guidance as to the wire color coding. You said that the pigtail used the same wire colors as the controller, is that correct? If so, the controller will likely wire up color for color. You'll want to test that, however.

Use a circuit tester like part # PTW2993 on the pigtail after you've plugged it in with the vehicle ignition on. One of the pigtail wires should show a constant 12-volt power, this wire would connect to the black wire on your brake controller. One pigtail wire should only show power when the brake pedal is pressed. Connect to the red wire. Of the remaining two wires, one is the ground, one is the brake output circuit. Do a continuity test on the brake output pin on the trailer connector (it's the pin in the 5:00 position) and both remaining wires. The wire that shows continuity is the output circuit, which connects to the blue brake controller wire. The remaining wire is the ground.

OR, you could avoid the testing and pick up # 3031-S which WOULD wire to your controller color for color.

I'll link you to some FAQ articles that you might find helpful.

expert reply by: Mike L

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