S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

Which post is grounded

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Old 06-11-2018, 02:03 PM
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Default Which post is grounded

I have an Audi A4 2006 turbo. I need to put a trickle charger on and I need to know what post is grounded Positive or negative. I am a car geek.
Old 06-11-2018, 02:06 PM
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Default Which Post is grounded

I have an Audi A4 2006 turbo. need to put a trickle charger on and can't tell if the positive or negative post is grounded
Old 06-12-2018, 11:54 AM
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I connect my trickle charger to the positive battery post and the bolt that sticks out of the firewall just below where the brake accumulator line passes through.
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