Car Wiring Diagrams for Trailer tow circuit for Chevrolet Blazer III (2018-2023)

7-PIN 4-PIN BACKUP LAMPS CIRCUIT BACKUP LP CTRL BATT POS VOLT BATTERY FUSE BLOCK BLK WIRE BLU WIRE BLU/WHT WIRE BODY CONTROL MODULE (UNDER CENTER OF INSTRUMENT PANEL, NEAR FLOOR) BRN WIRE COMPUTER DATA LINES SYSTEM GRN WIRE GRN/WHT WIRE GRY WIRE HIGH SPEED GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK (FRONT RIGHT SIDE OF CENTER CONSOLE) LEFT TRAILER STOP/ TURN SIGNAL LAMP RELAY LH TRLR TURN SIG LP ORG/ WIRE POWER SUPPLY TRANSFORMER PRK LAMP RLY CTRL REAR BODY FUSE BLOCK RED WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE RH TRLR TURN SIG LP RIGHT TRAILER STOP/ TURN SIGNAL LAMP RELAY TRAILER BACKUP LAMPS RELAY TRAILER BRAKE PROVISION TRAILER CONNECTOR TRAILER PARK LAMPS RELAY TRLR BRK APPLY SIG VIO WIRE W/ TRAILER PROVISION WHT WIRE WHT/BLU WIRE YEL WIRE YEL/GRY WIRE