I have an early 60'S 390ci and I had the Gen rebuilt and replaced the V-reg because the light was constantly on and the batt was not getting a charge. The other night I noticed that when I increase the RPM's the gen light start to get brighter and brighter. The batt is not the one that belongs to the car (somewhat smaller) and it seems to get weaker the more I start the car until it just won't crank. I think that the batt isn't getting a charge. What's do you think is going on here? Did I hook something up wrong and how do I check it?