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Old 12-17-2017, 01:59 PM   #1
1st Gear Newbie
Join Date: Dec 2017
Location: Ontario
Posts: 1
Alternator wiring question

Hi everyone! New here so sorry if this has been covered before but I couldn't find anything on it. I have a '99 323i as a winter car. We suspect that the front bearing in the alternator is failing. While pulling some parts off a scrapped 325i, we grabbed the alternator. Physically, the two alternators look identical and both are 120 amp but mine has a 2-wire plug whereas the one from the 325i has a single wire plug. Does anyone know what the differences are and if I can somehow use the single-wire alternator on my car?
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Old 12-17-2017, 08:14 PM   #2
6th Gear Member
Join Date: Apr 2007
Location: Toronto, ON, Canada
Posts: 1,299
Realoem should help you out. I recall some cars have a higher capacity alternator.
You can also check on

2002 E46 325ci // 5spd // ISC N1 Coilovers
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