GMC Sierra Classic 2500 HD (2007-2007) battery pk lamp rel headlights ctrl ground horn rly ctrl serial data Wiring diagram

5 20 22 DOOR AJAR SW SIG DOOR SW LO REF SERIAL DATA AJAR SW BASE BATTERY PK LAMP REL HEADLIGHTS CTRL GROUND HORN RLY CTRL SERIAL DATA BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE BRN WIRE CLASS 2 DATA DK BLU WIRE DK GRN WIRE DRIVER DOOR LATCH ASSEMBLY (REAR OF DRIVER'S DOOR) DRIVER DOOR MODULE EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM FRONT PASSENGER DOOR LATCH ASSEMBLY (REAR OF RIGHT FRONT DOOR) FRONT PASSENGER DOOR MODULE GROUND GRY WIRE GRY/BLK WIRE HORNS SYSTEM HOT AT ALL TIMES I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) I/P JUNCTION BLOCK (LOWER RIGHT SIDE OF DASH) I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND PANEL) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) INSIDE DRIVER DOOR) INSTRUMENT PANEL CLUSTER (IPC) KEY SW LEFT REAR DOOR LATCH ASSEMBLY (CREW CAB) (REAR OR LEFT REAR DOOR) LOGIC LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE PNK/WHT WIRE RF DOOR AJAR SW LF DOOR AJAR SW RIGHT REAR DOOR LATCH ASSEMBLY (CREW CAB) (REAR OR RIGHT REAR DOOR) RR DOOR AJAR SW LR DOOR AJAR SW SECURITY INDICATOR SPLICE PACK TAN WIRE TBC BATT FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE