Cadillac SRX II (2009-2012) Trailer tow circuit, without heavy duty trailer provisions

22 8 17 PARK LAMP SPLY LEFT TRAILER RIGHT TRAILER 23 24 DATA BUS - DATA BUS + BATT POS VOLT BLK WIRE BODY CONTROL MODULE (ON LOWER LEFT SIDE OF DASH) BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DRL CTRL EXTERIOR LAMPS CIRCUIT HOT AT ALL TIMES LEFT TRAILER STOP/ TURN SIGNAL LAMP RELAY LT BLU/WHT WIRE ORG/ WIRE PRK LPS TRLR FUSE REAR BODY FUSE BLOCK (LEFT REAR QUARTER PANEL) RIGHT TRAILER STOP/TURN SIGNAL LAMP RELAY RR TURN SIG LP SPLY VOLT TAN WIRE TAN/BLK WIRE TRAILER CONNECTOR TRAILER PARK LAMP RELAY TRLR LT S/T LMP FUSE TRLR RT S/T LMP FUSE YEL WIRE YEL/BLK WIRE