GMC Terrain I (2009-2015) Trailer tow circuit

BLK WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE FUSE GM LAN SERIAL DATA HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (LEFT REAR OF ENGINE COMPT) LEFT TRAILER STOP/ TURN SIGNAL LAMP RELAY LH SIG LP CTRL ORG/ WIRE PARK LAMPS RELAY RH SIG LP CTRL LP SPLY VOLT RIGHT TRAILER STOP/ TURN SIGNAL LAMP RELAY TRAILER CONNECTOR (UNDER CENTER OF REAR BUMPER) WHT WIRE YEL WIRE