6.6l vin 1, charging circuit for Chevrolet Silverado 3500 (2002-2006)

AUXILIARY BATTERY RELAY (RIGHT REAR OF ENG COMPT) AUXILIARY GENERATOR BATTERY BLK WIRE BLK/WHT WIRE BRN WIRE CHARGE INDICATOR CONTROL COMPUTER DATA LINES DK GRN WIRE ENGINE CONTROL MODULE (ECM) (ON LEFT FRONT OF ENGINE COMPARTMENT) FUSE HOLDER FUSIBLE LINK GENERATOR 2 GENERATOR FIELD DUTY CYCLE SIGNAL GROUND GRY WIRE HOT IN RUN, START I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN 1 VOLT IGN E FUSE INSTRUMENT PANEL CLUSTER IPC CLASS 2 SERIAL DATA LEFT BATTERY LOGIG PNK WIRE POWER DISTRIBUTION SYSTEM PRIMARY GENERATOR RED WIRE RIGHT BATTERY RIGHT BATTERY (W/AUX BATTERY) SEO IGN FUSE SERIAL DATA CLASS 2 STARTER UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENG COMPT) UPFITTER OPTION VOLTS W/ SEO W/AUX BATTERY W/DUAL BATTERIES W/O SEO