Transfer case circuit, 2-speed manual for Chevrolet Silverado 2500 (2000-2004)

AUXILIARY BATTERY RELAY BLK WIRE BLK/WHT WIRE BODY RELAY BLOCK (UNDER LEFT SIDE OF DASH) BRN WIRE DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DK GRN WIRE DSL(ECM) GAS (PCM) ELECTRONIC BRAKE CONTROL MODULE (ON LEFT SIDE OF INNER FRAME) FRONT AXLE ACTUATOR FUSE GRY WIRE GRY/BLK WIRE HOT IN HOT IN RUN, START INSTRUMENT PANEL CLUSTER LAMP LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LOGIC LT BLU WIRE MODULE (DIESEL) (LEFT FRONT OF ENGINE COMPT) PNK WIRE POWERTRAIN CONTROL MODULE (GAS ENGINES) OR ENGINE CONTROL PPL RUN WIRE SPLICE PACK TRANSFER CASE SHIFT SWITCH (LEFT FRONT OF TRANSFER CASE) TRANSMISSION CONTROL MODULE (W/ ALLISON TRANS) (LEFT FRONT OF ENGINE COMPT) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY)