The footwell 12v power and rear console power are hot all the time.... I think the center front 12v power is switched (the one in front of the gear shift) so you can try using that one if you have to leave it plugged all the time.

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Robert

1994 740iL
2001 X5 4.4i Sport
2004 Kawasaki ZX-6R
2009 VW Jetta S