Car Wiring Diagrams for Roof light circuit for GMC Sierra IV (2018-2022)

AUXILIARY MULTI-FUNCTION SWITCH BATTERY FUSE BLOCK BLK WIRE BLU WIRE CONFIGURABLE PROVISION BLUNT CUT CONFIGURABLE PROVISION RELAY 4 EXTENDED CAB CREW CAB GRN/BLU WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT PANEL AUXILIARY FUSE BLOCK POWER DISTRIBUTION SYSTEM RED/BLU WIRE ROOF BEACON RELAY WHT/BLK WIRE