Ford Bronco Fog & Driving Light Relay Wiring Diagram - Fuses, Relays & Switches

This document is a simplified auxiliary lighting wiring diagram showing how to wire fog lights and driving lights using relays on a vehicle. Power comes from the battery through a fuse block containing three fuses rated 20A, 30A, and 30A, each feeding one of three relays: a Fog Light Relay, Drive Light Relay 1, and Drive Light Relay 2. The two driving-light relays are enclosed in a red box with the instruction to mount them on the core support. The relays are triggered by a Fog Light Switch and a Driving Light Switch, which receive power via a switch located under the bumper; the switch circuit power source is labeled 'Headlight Switch / Parking Light Power', meaning the auxiliary lights only operate when the parking/headlights are on. Each relay's output feeds a bank of lamps — the diagram shows two groups of four lamps, each grounded. A reader can learn the general relay-based wiring scheme for adding fog and driving lights, the fuse amperages to use (20A for fog, 30A each for driving lights), the trigger/interlock scheme, and the recommended relay mounting location. The diagram carries an 'RJM' watermark and contains no explicit year, make, model, wire colors, or part numbers.