Mike Claar

It's a 1948 Business Coupe. It has a 12V Battery and a 1 wire GM alternator, it is setup as a negative ground. The ammeter does seem to act strange when you rev the motor. The gas gauge seems to go up as I rev the motor. The Blower, radio, and horn doesn't work. I assume they have been disconnected. The wipers work but run fast, I know the starter is still a 6V starter, and the turn signals seem to blink fast. Most of the outside lights work, but no dash lights.

I'm new to this sight. I just bought a 48 Business Coupe. Got some electrical question. I'm sure a lot of fingers have touched this thing over the years. I'm wanting to make a reliable driver out of it. So here goes. I know it was a 6V positive ground when new. Someone has put a one wire 12 alternator on it with negative ground. It starts and runs. Anything I should be looking for to make sure this was done correctly?