GMC Vandura G2500 (1985-1995) 2-speaker system circuit

ANTENNA ANTENNA INPUT BLK WIRE BRN WIRE BUS BAR GROUND COAXIAL CABLE DK GRN WIRE FUSE BLOCK (UNDER LEFT SIDE OF DASH) GROUND INST LPS LIGHTS SWITCH GRY WIRE HORN/DM FUSE HOT AT ALL TIMES HOT IN ACCY OR RUN HOT IN PARK OR HEAD INST LPS FUSE LEFT FRONT SPEAKER LT FRT SPKR LT FRT SPKR RT FRT SPKR RT FRT SPKR LT GRN WIRE ORG/ WIRE POWER (BAT) RADIO RADIO FUSE RIGHT FRONT SPEAKER TAN WIRE YEL WIRE