donradcliffe,, Maybe I did not explain it correctly,
It all started off flat battery's, we would start the gen-set up charge the battery's but they would be flat within 2 days
On comes the auto electrician,,, and he found the alternator was stuffed and also the house and main starting battery's, On Monday when we installed the new battery's and reconditioned alternator.
Now when he was trying to check the charge rate said there was a problem and as the boat was built in 1991 trying to trace where the additional wires were going this is when they found the external regulator now he said the ordinal alternator could not have a built in regulator and when they put a later model alternator on with the built in regulator they forgot to disconnect the old external .
Now all I know is what he said; The power from the alternator goes to the battery's via the built in regulator anything in the way will inter fair with the current
flow and the fact that it was going via the external the built in regulator was unable to determine if the battery's were charged
What I can tell you we have one very pissed off owner