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Old 02-16-2013, 12:13 PM   #13
bmwbob89
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Join Date: Jun 2012
Location: Newburyport Ma,
Posts: 523
My Ride: M-5 325 X3 528 740
If the reverse light don't work it is most likely the reverse light switch as Sam has stated. The mirrors are on a different bus than the engine. You can just the pins on the switch to see if it is the switch. Jumped and the reverse lights should come on.
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