GMC Cab & Chassis K3500 (1985-2000) Anti-lock brake circuits

ANTI-LOCK IND BATT GROUND BLK WIRE BLK/WHT WIRE BRAKE IND BRAKE PRESSURE WARNING LAMP WARNING (ON MASTER BRAKE CYLINDER) BRAKE WARN IND GROUND BRN WIRE CONVENIENCE CENTER DATA LINK CONNECTOR DIODE (BEHIND LEFT SIDE OF I/P) DK GRN WIRE HOT AT ALL TIMES UNDERHOOD FUSE/RELAY CENTER MAXI- FUSE 4 HOT IN RUN BRAKE FUSE 18 HOT IN RUN, BULB TEST OR START FUSE BLOCK GAGES FUSE 4 IGN FEED ABS IND BRAKE SW INSTRUMENT CLUSTER LEFT FNT SENS LO LEFT FRONT WHEEL SENSOR LT BLU WIRE LT GRN/BLK WIRE PNK WIRE PPL PPL/WHT WIRE RED WIRE RIGHT FRONT WHEEL SENSOR RT FNT SENS LO LEFT FNT SENS HI RT FNT SENS HI TAN WIRE TAN/WHT WIRE TCC/STOPLAMP SWITCH (TOP OF BRAKE PEDAL) VEHICLE SPEED SENSOR (LEFT REAR OF TRANS) VSS BUFFER INPUT DLC WHT WIRE YEL WIRE