Sounds like the gen is going out. is the belt ok? if so take it out ( the gen ) and get it tested. also might as well replace the regulator On Sun, Mar 3, 2013 at 12:05 PM, Denis Dodson <coocoo@xxxxxxx> wrote: > Dave has a new 12v generator in his 67 bus. It's the original set up. Last > night as we drove out to Hilo he said that his red dash light was on and > that it usually goes out. I told him I didn't want to walk home from Hilo, > so we tuned around. Back home I put the test light to the terminals of the > generator and got no light. then I out the red wire from the multi-meter on > the positive post on his battery and the black wire to the negative strap > and got 12v. When we started the engine it went to around 11.9 and went up > and down when we revved the engine. The meter never read above 12v. Did I > do the test right? > > I am an alternator guy so I am in the woods with voltage regulators and > stuff. Tell me what to test and how to fix the problem. Hurry, we got > markets today! >