On your Tekonsha Primus IQ Trailer Brake Controller # TK90160, the blue wire is for brake output, the red wire is for the brake light switch on the vehicle, the black wire is for 12V power, and the white wire is for ground. Based on the functions you found listed for the factory wiring on your 2018 Chevy Traverse Limited, the following connections will be made when installing this brake controller:
Blue wire on Traverse to Blue wire on brake controller
Red/Black or Red/Blue wire on Traverse... view full answer...
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