Re: 43h not charging up battery on 12volt

Posted by steve on December 29, 2003 at 19:21:27 from (204.246.222.196):

In Reply to: 43h not charging up battery on 12volt posted by KentinN.B. on December 29, 2003 at 18:56:30:

we will assume this is an alternator with an internal voltage regulator. you need three things to make it work.--the alternator must have a good ground (no rusty bolts)-- there should be a BIG wire off the back lug (1/4 inch bolt) that goes to the ampmeter, then to the + terminal of the battery. make sure all are tight.--third, there should be a smaller wire that is the excitation wire on a smaller terminal. it will get 12 volts from the key or switch when motor is running. chekc for the 12 volt signal. what does the ampmeter say? measure voltage at the BIG terminal to ground when running. what does it say. if everything checks out o.k., then you probably have a bad regulator inside.

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