Ford Bronco Headlight & Driving Lights Relay Wiring Diagram (Adrianspeeder)

This is a hand-drawn (CAD-style) automotive lighting wiring diagram credited to "Adrianspeeder," uploaded to a 1988 Ford Bronco gallery. It shows how to wire three standard relays, a Driving Lights Relay, a High Beams Relay, and a Low Beams Relay, to control Extra Driving Lights, High Beams, and Low Beams from a 12V battery source. Each relay is drawn with its standard terminals labeled by number and wire color: 30 (red) power input, 85 (blue) coil ground, 86 (green) coil trigger, and 87 (yellow) output to the lamps. Relay terminal 30 on all three relays feeds from a common red 12V power bus. The Driving Lights Relay's trigger (86) is fed through a circuit containing a diode and a "manual override switch," allowing the extra driving lights to be triggered either by the stock high-beam circuit (via the diode) or manually. The High Beams Relay trigger connects to the "Stock Highbeam switch and wiring," and the Low Beams Relay trigger connects to the "Stock Lowbeam switch and wiring," so the factory headlight switch only carries relay coil current while the relays carry lamp current. Each lamp pair is shown grounded to chassis. No part numbers, fuse ratings, or year/model applicability are stated on the document.