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Replacement Trailer Connector and Wiring Harness for a 2012 GMC Savana Van


does that part come with plug in wiring harness 20121 gmc savanna van 2500


Expert Reply:

Pollak 7- and 4-Pole Trailer Connector Socket # HM40975 is just the socket and the mounting bracket. The wiring harness is sold separately, # PK11998. It plugs right into the back of the socket but the other end has to be hardwired in.

The wire functions are as follows:

Red is left turn/brake lights
White is ground
Blue is output to electric brakes
Green is right turn/brake lights
Black is 12 volt power
Brown is running lights
Yellow is reverse lights

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