Headlamps/fog lamps circuit, drl with sealed beam lamps for GMC Rally G2500 (1985-1995)

ACCY BLK WIRE BRN WIRE BULB TEST BUS BAR GROUND DAYTIME RUNNING LAMP INDICATOR DAYTIME RUNNING LAMPS MODULE (ON LEFT SIDE OF I/P) DAYTIME RUNNING LAMPS RELAY (ON LEFT SIDE OF I/P) DIODE ARRAY MODULE (UNDER LEFT SIDE OF I/P) DK BLU/WHT WIRE DK GRN WIRE DRL FUSE FOG LAMP ON INDICATOR FOG LAMP RELAY (BEHIND LEFT SIDE OF I/P) FOG LAMP SWITCH ILLUM LAMP FUSE BLOCK GAGES FUSE GRN WIRE GROUND GRY WIRE HEAD PARK HEADLAMP DIMMER SWITCH HEADLIGHT SWITCH ASSEMBLY HI BEAM INDICATOR HI HI LO LO HORN/DIM FUSE HOT AT ALL TIMES HOT IN RUN OR START IGNITION SWITCH INSTR LPS FUSE INSTRUMENT CLUSTER LEFT HEADLAMP ASSEMBLY RIGHT HEADLAMP ASSEMBLY LOCK OFF LT GRN WIRE LT GRN/BLK WIRE LT LT NCA WIRE OFF OFF HEAD ORG/ WIRE PARK PARK BRAKE SWITCH (ON PARK BRAKE PEDAL SUPPORT) PNK/BLK WIRE PPL PPL/WHT WIRE RIGHT FOG LAMP LEFT FOG LAMP RUN WIRE TAN WIRE TAN/WHT WIRE VARIABLE VOLTAGE W/ HEADLIGHT SWITCH IN PARK OR HEAD, RHEOSTAT ADJUSTED WHT WIRE YEL WIRE