Ford Bronco Idle Speed Control Wiring Diagram - ISC Solenoid, Diode & Wire Colors

This is a cropped fragment of an automotive wiring schematic showing part of an idle speed control circuit. Two parallel circuit branches are shown, both fed from a common RED wire on the left. The upper branch passes through a component labeled 'IDLE SPEED CONTROL' (drawn with a coil/winding symbol) and exits on a GRN/WHT (green/white) wire. The lower branch passes through a component labeled 'DIODE' and also exits on a GRN/WHT wire; the two GRN/WHT outputs join at a common junction on the right side. At the right edge of the image, another RED wire leads toward a partially visible box labeled 'DITHER... SOLEN...' (dither solenoid), which is cut off by the image border. A reader can learn the wire colors (RED supply, GRN/WHT control side) for the idle speed control solenoid and its protective diode, and that these connect toward a dither solenoid circuit. No year, model, part numbers, connector pin numbers, or fuse data are visible in this fragment.