The GM one wire should only have the main terminal hooked to the battery. Nothing else. A voltmeter will tell you if it's charging. From: Matt Haas To: "AMC, Rambler, Nash, Jeep and family" Subject: Re: [AMC-list] One wire alternator Message-ID: Content-Type: text/plain; charset=ISO-8859-1; format=flowed The diodes in the alternator are bad. Since you modified the case, you voided the warranty on it. You best bet now is to buy a rebuild kit for it which will have the a new diode in it (it also has a voltage regulator and new brushes -- I'd replace it all). This is a pretty easy thing to fix. The only real trick is holding the brushes back when you re-install the case but that is actually pretty easy to do. There is a hole near the brushes that you can stick a stiff wire (like a paper clip) into to hold them back. Matt On 3/20/2011 3:45 PM, feltonjk@xxxxxxx spouted this sage advice: > > > Thanks for the advice on the one wire alternator. I bought an AC Delco, napa part no. 13-4011sw as recommended by Jim. Modified case so it fit bracket. Followed instructions on planethouston site. Battery hot wire connected, pig tail with one red wire, one white wire. Red wire connected to same connection as hot wire. White wire connected to orange wire coming off wiring harness (orange wire used on back of orig alternator. That is it. Now have alternator lite on in dash when key is off. When key is turned to on position the alternator light goes off. Have not started the car yet so don't know what will happen under load. Question is why is alternator lite on in dash when key is off? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://list.amc-list.com/pipermail/amc-list-amc-list.com/attachments/20110321/91c46a39/attachment.htm> _______________________________________________ AMC-list mailing list AMC-list@xxxxxxxxxxxxxxxxx http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com