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Showing results for tags 'GM cs12 Alt upgraded'.
Ok so I have a 1977 280z I have done the GM alternator up grade cs10 if I'm not mistaken I had a cs12 which is a 83amp alternator installed when I original did the swap. but I ended up replacing it with the lower amp cs10 due to lack of funds at the time. So to my point I'm having charging issues. It charges at 12.5v no load at idle. I have checked the 2 terminals on the alternator plug I have 12.5v switched going into terminal 1 and 12.5/0 (loaded power) going into terminal 2. I have checked resistance on terminal one key on (battery disconnected) and I'm showing 40ohms. I have consulte