6.6l vin 6, transfer case circuit, 2-speed manual for GMC Sierra 2500 HD (2002-2012)

4.3L 43 44 57 44 28 27 GMLAN BUS + GMLAN BUS - AUX HVAC-IGN FUSE 48 FUSE 45 AXLE SW SIG BLK WIRE BLK/WHT WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE FRONT AXLE ACTUATOR (ON FRONT AXLE ASSEMBLY) GAS DIESEL GROUND DISTRIBUTION SYSTEM 4.8L, 5.3L, 6.6L 4.3L 6.0L, 6.2L GRY/BLK WIRE HOT W/ RUN/CRNK RELAY ENERGIZED IGN GND INSTRUMENT PANEL CLUSTER (IPC) LOGIC PNK WIRE SER DATA TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRANS IGN 1 FUSE 19 FUSE 13 TRANSFER CASE SHIFT CONTROL SWITCH (ON TOP LEFT OF TRANSFER CASE) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT)