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Trailer wiring for brake control...

Mark Francois

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Mark Francois Enthusiast

Mark Francois

Posted
Posted

My 03’ yukon slt with the 4.8l came with no hitch or trailer wiring either. I’m getting ready to order the hitch and the plug and the plug and play wire harness but is the connector there under the dash for a brake controller? Or do I need to run all the wires myself? Thanks for the input!

davester Senior Enthusiast

davester

Posted
Posted

I think it's like the trucks, where GM had a plug specifically for brake controllers, that goes into a relay/plug box in the driver's footwell (there's a plastic cover with a screw in the middle of it, the plug plugs in behind that cover).  The TBC will either have that plug, or you get the plug with stub wires, and you wire the TBC to those stub wires...

Brian715 Enthusiast

Brian715

Posted
Posted

There is a plug that you get that plugs into the distribution block near your left foot when driving. Then you will need to connect the brake control wire to the fuse block under the dash and insert a 30 amp maxi fuse. There are a bunch of YouTube videos on this, especially from e-trailer. 

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