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3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix. is the premier BMW Forum on the internet. Registered Users do not see the above ads.
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Old 08-30-2010, 01:58 AM   #1 (permalink)
Join Date: Apr 2010
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bimmerboy8912 is on a distinguished road
Battery connection!?!? Help!!

I just bought a 1985 325e and the battery was disconnected when delivered. I have no idea how the battery is connected. Is the positive terminal on the battery supposed to be grounded?!?? And therefore the negative terminal would be connected to the positive lead from the car? Or is it like newer cars with positive to positive and negative to negative? PLEASE HELP!
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Old 09-07-2010, 06:07 AM   #2 (permalink)
Join Date: Mar 2010
Location: port glasgow
Car: minted restored e30 bmw 325i.
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TOMMYSPANNER is on a distinguished road
the black wire going to the frame, goes to battery negative, the red one goes to the battery positive,it should be marked.
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