Jamie Holder

Any ideas or info ?

Need explanation on wiring a 2020 Chevy Colorado WT Trailer brake control on the dash. Wiring already completed in rear and purchased the factory TB Control and Wiring connector and harness but confused on which wires go where. I have the schematic from the dealer for the TB Control that has 8 wires. Indicates 1,2 not used. 3 is TBC Switch 5V reference, 4 is TBC Manual Apply Signal, 5 is TBC Manual Apply Redundant Signal, 6 is TBC User Gain Signal, 7 is LED Backlight Dimming Control, 8 is TBC Switch Low Reference. In my owners manual is indicates the 4 wires for connecting the TBC are located under the left kickplate and have located them. The four wires per manual are Red/Green = Battery Feed, Black = Ground, White/Blue = Brake signal to Controller, Blue = Brake Power to Trailer Connector. Wires only 4 wires from the truck and 6 wires to the controller need to know which controller wires go to what. See files attached Colorado Brake Control Wiring.pdf 2020 Colorado Trailer Brake Control Wiring.docx