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      09-04-2019, 11:21 AM   #5
MrSweet1991
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Drives: BMW E90 330D M Sport
Join Date: Apr 2017
Location: West Midlands

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Quote:
Originally Posted by Tambohamilton View Post
Chances are that the brushes are worn out on the motor. Can be diy replaced, or new pump time. Test it by wiring it directly to the battery.
How exactly would I run the aux pump off the battery?