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Discussion Starter · #1 ·
I just bought an 82 toy with a Chevy 350. The PO put the previous 90 amp Denso? alternator on which is a 2 wire alternator. He told me Chevy's require a 1 wire alternator. Therefore he said the charging system would not charge correctly and be either too high or too low. It died about twenty minutes away from his house and wouldn't restart because the battery was dead <IMG SRC="smilies/mad.gif" border="0">. When I put a new battery in it started fine and then ran, although I haven't run it today to know how the new battery is. Is this guy smoking crack? Does anybody have any idea WTF is going on here.

Milan
 

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Yep this is true, but you should be able to convert the Nippo into a single wire or hell just get a one wire at the junk yard. Not sure if the nippo requied a regulator, if memory(known to fail) is correct it does use a regulator, you could go to the junk yard and get the electronics that control it...best bet is to get a 140 Amp from an old cop car...one wire to hookup, power to the coil(ign) to tell it to charge...make it simple ....
 

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Discussion Starter · #3 ·
Originally posted by coyote:
<STRONG>Yep this is true, but you should be able to convert the Nippo into a single wire or hell just get a one wire at the junk yard. Not sure if the nippo requied a regulator, if memory(known to fail) is correct it does use a regulator, you could go to the junk yard and get the electronics that control it...best bet is to get a 140 Amp from an old cop car...one wire to hookup, power to the coil(ign) to tell it to charge...make it simple ....</STRONG>
So is the alt. from the junkyard 1 or 2 wire, it sounds like it's 2. Hmm, any idea how to convert it to one wire or could my problem be that the 90 Amp denso just isn't strong enough to run the 350 engine and recharge the battery?

Milan
 

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All alternators have at least two connections...one big wire that goes off a large post and another small one that puts 12 volts to the field(tells it to charge)...with that said...other remote or non-internal voltage regulation is required( usually two small wires on one connector) that would be used to control the alternator. GM has what they call a 1 one alternator easy to spot in the junkyard as they only have two possible connections versus 3 or more(some) try to locate a mid 80 or early 90's pre vortec to use and it will bolt right in. Connect one wire(large) to your battery and the other to ign switch circuit, very important or you will drain your battery....to answer your question about the 90 amp alternator, assuming its still good, quick stop at Autozone, Pet Boys, Napa or others will tell you if the alternator is functioning...try this first as its the cheapest and best option. The reason I recommend 140A is that it is the largest one offered from GM that I'm aware of that will fit stock brackets...and when you upgrade to a winch it might be handy, not always necessary but handy....keep them coming we will figure it out....
 

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Discussion Starter · #5 ·
Thanks for the explanation, hopefully that's what's going on. I'm going to try and find an alt. this weekend and then put it in.

Milan
 
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