Charging circuit for GMC Envoy II (2001-2009)

4.2L 5.3L, 6.0L AIR CONDITIONING SYSTEM BATT + VOLT GEN FIELD DUTY CYC BATT + VOLT GEN TURN ON BATTERY BATTERY VOLTAGE BLK WIRE BLK/WHT WIRE CHARGE INDICATOR CLASS 2 CLASS 2 DATA DK GRN WIRE ENGINE CONTROL MODULE (ECM) (5.6L, 6.0L) (NEAR LOWER LEFT FRONT OF ENGINE) FUSIBLE LINK 1 (8 GA- GEN FIELD DUTY CYCLE GENERATOR GENERATOR REGULATOR CONTROL GROUND GROUND GEN REG CNTRL CLASS 2 DATA PPL GRY WIRE HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER (IPC) IPC/DIC FUSE 24 ORG/ WIRE POWERTRAIN CONTROL MODULE (PCM) (4.2L) (ON UPPER LEFT SIDE OF ENGINE) PPL RED WIRE REGULATED VOLTAGE CONTROL MODULE (BEHIND BATTERY) RVC FUSE 59 FUSE 62 STARTER UNDERHOOD FUSE BLOCK (ABOVE LEFT FRONT WHEELWELL) VOLTS WHT WIRE