alternator testing
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Elder User
Joined: Nov 2004
Posts: 699
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From: George West, Texas....
alternator testing
Can't the alternator be tested using a volt meter and putting the red lead to the big black/red wire and connector on the alt..
Then grounding the other end to the frame or something ?
I know my battery's are bad but I'm trying to check the alt..
Then grounding the other end to the frame or something ?
I know my battery's are bad but I'm trying to check the alt..
Cargo Master
Joined: Oct 2010
Posts: 2,089
Likes: 16
Yes if you want to check voltage out put of the alternator, you can either touch the red lead to the large lead on the alternator and the other to battery ground or just connect red to battery positive and black to battery negative. That will just give you a voltage out put but will tell you nothing on the amp output. If you can drive it, just about any auto parts store will check it for you free.
Laughing Gas
Joined: Nov 2010
Posts: 1,193
Likes: 2
From: D.C. but heart's in TEXAS
DITTO. And if you can't drive it, our alternators are easy enough to pull out. A lot of auto parts stores have a machine they will put it on to test it.
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