Interior light circuit, motor home chassis for GMC Forward Control P3500 (1985-1999)

BLK WIRE BRN WIRE DIM HIGH DK GRN WIRE DOME LAMP SWITCH GRY WIRE HEADLAMPS SWITCH HORN DM FUSE 3 HOT AT ALL TIMES I/P FUSE BLOCK I/P LAMPS DIMMER SWITCH INSTR LPS FUSE 16 INSTRUMENT CLUSTER LIGHT SWITCH OFF HEAD PARK ORG/ WIRE PANEL LAMPS SWITCH PRNDL LAMP PROVISION FOR DOME LAMP PROVISION FOR ROOF MARKER LAMPS SEAT BELT ALARM (BOTTOM OF I/P FUSE BLOCK) TAIL LPS FUSE 7 WHT WIRE