my fog light is not LED but just a bulb...but the bulb is a dual filament...My light has three wires...A red/white/black....My black is tied to ground..My white wire is hooked to the running lights(parking lights) and the red is wired to the brakes....So when the lights are turned on the white lights them up, and when I hit the brakes the red lights the second filament in the bulb to make it get brighter...I not sure of your wiring but I would have to imagine it would be the same....
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