Plug Location?
Dickson,
Under the drivers side steering column left of the break pedal there is a black box. Unbolt it ( one plastic bolt in the middle ) and on the inside there is a diagram to which plug connector you plug to use for the break connector (use a GM connector). Also under the hood there is a 30 amp fuse which needs to be installed so the 7 prong plug by the trailer hitch hot wire is (red) is hot ..Mine a 2004 GMC Duramax there was a red dummy plug which I pulled and installed a fuse I hope this helps . Just BeClaus