Photochromic mirror circuit for GMC Envoy I (1997-2000)

AUTOMATIC INSIDE DAY-NIGHT MIRROR B/U LAMP FUSE 25 BLK WIRE BRN WIRE C/M FUSE 21 GRN WIRE GRY WIRE HOT IN RUN HOT IN RUN OR START I/P FUSE BLOCK (ON LEFT SIDE OF DASH) INTERIOR LAMPS SYSTEM LT (SEE NOTE) LT GRN WIRE NCA WIRE NOTE: OFF PHOTO SENSOR PNK WIRE POWER DISTRIBUTION SYSTEM POWER, LOGIC CIRCUITS SPLICE PACK UNDERHOOD BUSSED ELECTRICAL CENTER (UBEC) (ON TOP OF LEFT FRONT FENDER WALL) VEH B/U FUSE 12