How to test my alternator: SOLUTION
I have a 2003 Holiday Rambler Neptune (Diesel pusher). I just took it for a spin and the "alternator" dash light was coming on intermittently. Not sure if it's a short in the light, or if the alternat...
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If you have a volt meter, then check voltage with engine running with the red lead on alt output. Should be close to 13+ volts. Now have someone run the engine up and voltage should jump up to close to 15. As long as the voltage does not stay stable then the alt is good.
