2001 Gmc Sierra Brake Wiring Diagram. Jump to latest follow 1 15 of 15 posts. Purple for backup lights.
White pin for the floor. Brown pin for unwanted markers tail lamps and running lights. Purple for backup lights.
The 7 prong just adds a 12v for battery charging 8 10 gauge black a blue for trailer brakes and a orange for backup lights.
Purple for backup lights. Its a 7 pin factory install ive never had problems until now. The fuse block access door is on the drivers side edge of the instrument panel. For instance in case a module will be powered up also it sends out the signal of fifty percent the voltage plus the technician would not know this he would think he.