Courtesy lamps circuit, with an3/dl3 for GMC Sierra 2500 HD (2002-2012)

14 15 RR DR SW LR DR SW 2 10 B+ SERIAL DATA 5 1 LP CTRL SPLY VOLT 5 13 9 LOW REF SW SIG SER DATA 6 4 GND B+ 9 12 PPL 9 5 4 13 SER DATA LOW REF SW SIG SW SIG ASSEMBLY (CREW CAB) (REAR OF RIGHT REAR DOOR) BLK WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) CENTER HIGH MOUNTED STOP LAMP (CHMSL) COMPUTER DATA LINES SYSTEM COURTESY LP 18 25 SPLY VOLT PPL DEFEAT SW DDM FUSE 4 DEF SW DIM FUSE 7 DK BLU/WHT WIRE DK GRN WIRE DOME LAMP DOME SW DRIVER DOOR LATCH ASSEMBLY (REAR OF DRIVER'S DOOR) DRIVER DOOR LOCK/WINDOW SWITCH FRONT DOME/ READING LAMPS GRY WIRE GRY/BLK WIRE HEADLAMP, PANEL DIMMER SWITCH HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, IS LPS FUSE 17 LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LEFT REAR DOOR LATCH ASSEMBLY (CREW CAB: REAR OF LEFT REAR DOOR) LEFT SUNSHADE (IF EQUIPPED) LEFT VANITY MIRROR LAMP LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MODULE NCA WIRE ORG/ WIRE PASSENGER DOOR LATCH ASSEMBLY (REAR OF PASSENGER'S DOOR) PASSENGER DOOR LOCK/WINDOW SWITCH PDM FUSE 9 READING LAMPS REAR DOME/ READING LAMPS (EXTENDED CAB, CREW CAB) RED/WHT WIRE RIGHT REAR DOOR LATCH RIGHT SUNSHADE (IF EQUIPPED) RIGHT VANITY MIRROR LAMP TAN/WHT WIRE VOLT W/ COMFORT, DECOR LEVEL 3 CONVENIENCE PACKAGE W/ INDIVIDUAL FRONT SEAT, POWER MIRROR W/ NON BUCKET FRONT INDIVIDUAL SEAT W/ NON BUCKET FRONT INDIVIDUAL SEAT, POWER MIRRORS W/O COMFORT, DECOR LEVEL 3 CONVENIENCE PACKAGE WHT/BLK WIRE YEL WIRE