Cooling fan circuit for Buick Century VI (1997-2005)

3.8L 3.1L BLK WIRE CONN TO COOLING FAN MOTOR) COOL FAN 1 FUSE COOL FAN 1 RELAY COOL FAN 2 FUSE COOL FAN 2 RELAY COOL FAN 3 RELAY DK BLU WIRE DK GRN WIRE ECT GRND ECT SIG ENGINE CONTROLS (MAP SENSOR) GRY WIRE HIGH SPD HOT AT ALL TIMES LEFT COOLANT FAN LEFT COOLING FAN DIODE (3.1L) LOW SPD LT BLU WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE RIGHT COOLANT FAN RIGHT COOLING FAN DIODE (3.1L) UNDERHOOD FUSE BLOCK (RIGHT SIDE OF ENGINE COMPT, MOUNTED TO STRUT TOWER) WHT WIRE YEL WIRE