If the light is dimmer than usual my guess is another item is drawing current THROUGH the light, a path to ground creating a series circuit of the effected items(stop light and ?). I'm not familiar with X5s but am guessing that the light is mounted on the tailgate. The wire loom to the gate may have frayed or broken wires that are touching. Find the spot the loom bends most and unravel to coverings to inspect the wires.
Last edited by ross1; 10-25-2014 at 06:50 PM.
If you can leave two black stripes from the exit of one corner to the braking zone of the next, you have enough horsepower. - Mark Donohue
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