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Old 03-22-2016, 10:15 AM
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patrickt patrickt is offline
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
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Quote:
Originally Posted by allcarfan View Post
Cruise at 2400rpms.....flick on heater..... appears to be 1.5v loss. Continued driving for 10 min...no change. Flick off heater....immediate 14.7v
Use the search function on this site to search for "inductive ammeter." I've posted here many times on it and provided pics of mine. That will let you easily diagnose exactly what each of your circuits is eating up, and what the alternator is putting out, without having to do any disconnecting or anything else -- you can't hurt anything with an inductive ammeter even if you tried. Once you know whether you're using too much, or not making enough, juice, then you can attack the problem. And these problems are invariably simple once you figure out what they are.
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