GMC Envoy I (1997-2000) Rear defogger & heated mirrors circuit, auto a/c

BLK WIRE BRN WIRE ELECTRONIC CLIMATE CONTROL MODULE (UNDER CENTER OF DASH) RR DEFOG GROUND HOT AT ALL TIMES HOT IN RUN HOT IN RUN AND START HTDMIR FUSE HVAC 1 FUSE 21 I/P FUSE BLOCK (ON LEFT SIDE OF DASH) IGN 3 IGN E FUSE 27 LEFT OUTSIDE REAR VIEW MIRROR NCA WIRE ON INPUT PPL REAR DEFOGGER RELAY REAR PUSHBUTTON REAR WINDOW DEFOGGER GRID RIGHT OUTSIDE REAR VIEW MIRROR RR DEFOG FUSE SOLID STATE SPLICE PACK UNDERHOOD ELECTRICAL BUSSED CENTER (UBEC) WHT WIRE