GMC Sierra 3500 (2002-2006) pto take off switch/relay wiring diagram

27 28 29 PPL BATTERY BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN WIRE BRN/WHT WIRE CAN-LOW CAN-HIGH CKP SIGNAL COOLANT LEVEL SWITCH (IN COOLANT RESERVOIR) CRANK FUSE 10 CRANKSHAFT POSITION SENSOR CRUISE CONTROL SYSTEM DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENGINE CONTROL MODULE ENGINE COOLANT TEMPERATURE (ECT) SENSOR ENGINE OIL LEVEL SWITCH (LEFT REAR OF OIL PAN) ENGINE OIL PRESSURE SENSOR (ON TOP REAR OF ENGINE) FUSE GROUND LOW REF GRY WIRE GRY/BLK WIRE HOT IN HOT IN OFF, RUN, START HOT IN RUN, START IA HTR DIAG 1 COOL LEV SIG IGN 0 FUSE IND CTRL SET/COAST SIG IGN 1 BATT LOW REF RES/ACC SIG INJ 1 CTRL INJ 4 CTRL EOP SIG INJ 8 CTRL INJ 3 CTRL LEFT I/P FUSE BLOCK LEV SW SIG PTO ENABLE LOW REF LOW REF LOW REF SPLY VOLT LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PLUG SIG PNK WIRE PNK/BLK WIRE PPL PPL 20 21 PPL LOW REF LOW REF PTO TAKE OFF SWITCH/RELAY RED/BLK WIRE STARTING/CHARGING SYSTEM TAN WIRE TAN/WHT WIRE TRANSMISSIONS SYSTEM TURN ON SIG CRANK VOLT P/N SIG CCP SW SIG INJ 2 CTRL INJ 5 CTRL PPL UNDER- HOOD FUSE BLOCK WATER IN-FUEL SENSOR WHT/BLK WIRE YEL WIRE YEL/BLK WIRE