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Tekonsha Wireless - BMW not powering the brake pin
OK, so I had no problem mating the Tekonsha to the car/trailer but BMW doesn't power the brake pin on the 7 way. How are people powering the brakes to the trailer? 
Is this a dealer install issue? The green/yellow lead should have been tied to a 12volt power source.
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2012 X5 35i
1999 M3
Last edited by Oaktree; 05-09-2012 at 09:56 PM.
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