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 Any ideas? 
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Joined: Thu Mar 28, 2013 6:09 am
Posts: 726
I have a #6 welding cable on mine with no issues..


Tue Jun 24, 2014 6:27 pm
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Joined: Fri Feb 08, 2013 2:37 pm
Posts: 1701
Use the same digital volt meter to check the alternator on your daily driver with all the electrical load on you can get, lights, heaters, fans, heated windows, etc, and see if the meter acts the same on a known good alternator. I’ll bet it doesn’t. It should have very near zero AC volts. If you can get to a diagnostic oscilloscope, check it with that. However, a regular DVM should work for this. If the one you are using acts jittery on a known good alternator, try another DVM.


Tue Jun 24, 2014 8:32 pm
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Joined: Wed Feb 20, 2013 11:38 pm
Posts: 403
I might just take it to an automotive electrical shop after I call and see if they can diagnose a bad diode.

Barry, I can't believe my 6ga wire isn't big enough for the little bit of crap i run. When I do a voltage drop test I get good numbers. I think it was .3 on the positive side and .01 on the ground side. That was from the back of the alternator to the fuse panel. However, the testing has all been done in my garage with a relatively cool everything.


Tue Jun 24, 2014 9:11 pm
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Joined: Wed Feb 20, 2013 11:38 pm
Posts: 403
I think I've found the problem. The ground spades on the fuse panel are not working right. The logger got to where it wouldn't even turn on. Reading voltage at the plug to the logger showed 7.59 volts.


Fri Jun 27, 2014 9:22 am
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Joined: Thu Mar 28, 2013 6:09 am
Posts: 726
I have to say 90% of the time it is a ground issue.


Fri Jun 27, 2014 6:02 pm
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