#1 pure and simple.
Most cars the alternator charges the battery and does some light work while driving.
On an E70 its like powering your house. That sucker works HARD between all the electrics normally needed plus seat heaters, mirror heaters, etc.
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Just BMW's - All cars and trucks was two pages long
1994 318is
1997 528i
2000 323i
2001 X5 3.0 auto
2005 X5 3.0 auto
2011 535xi auto
2013 X5 xdrive35 Turbo
More are at my website
Aftermarket E53 Radio Install
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