garythomas8708(at)yahoo.c
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 Posted: Mon Aug 10, 2009 12:18 pm Post subject: overvoltage problem |
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All,
I have a 601XL/Corvair with the standard William Wynne configuration. I have the John Deere alternator and regulator plus the PMOV overvoltage unit from B&C. I feel confident that I have it wired correctly since I would get 12V when I switched on the master, and then 14V when I switched on the alternator and started the engine. Recently I noticed my battery had a low charge, and the voltmeter showed a flat 12V, even with the engine running.
I had the battery recharged and load tested (it was fine), and I tested the alternator (around 40V ac on the two wires that lead to the regulator). The two wires that came out of the regulator and connected to the B&C capacitor were showing just 0.05V or so when I connected each of them separately through a voltmeter to a ground. Clearly a problem.
So I bypassed the entire overvoltage setup and connected these tabs dirrectly to the system bus. Now I get 14V when the engine is running.
I am at a loss to figure out where the problem is. I believe it must be somewhere in the B&C overvoltage system, but don't know where. Fuses are all ok.
Any ideas?
Gary
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