It's time for BMW and others to move to a 24 volt system. With all the electronics on board, the 12 volt system is inadequate.

A home built 40 years ago likely had a 60 amp service......today a 200 amp panel is probably standard.

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HP gets you to speed, Torque keeps you there !

1928 Model A Coupe
1957 MGA SOLD
1994 MBZ SL320
2007 Acura RL
2010 X5d 11/13 PCD