Alternator voltage on ISC engine
I had an issue earlier in the year with low voltage on the alternator (12.2v). I cleaned the connections at the alternator and that fixed that. Now I notice the voltage will fluctuate from 14.2 do...
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You didn't mention what type of coach you have. I just finished changing the alternator on my ISC. My problem was that the "Duvac" wire had broken off totally due to corrosion. However, in order to fix the problem, I had to remove the alternator and it was in very bad shape overall so replace it. Point is, the Duvac wire is critical to overall operation. This is a smaller, third wire on the back, in addition to the two bigger wires.
