Power to your old lights came through the harness on the alternator side of the ammeter. The relays provide power to the new lights direct from the battery. So the ammeter shows like it is charging the battery.
Yours is looking good! Just discovered my project 76 does not have ANY wire harness. Just bought an old OEM one, and it needs some repair (I was an auto electrician years ago, so it is within my comfort zone). My brother is in Brownsville, couldn't be any further south than him. I'm near...
I cut off the drivers side at the firewall, pulled everything from the engine to the ECU on the right. Removed the ALDL plug under the drivers dash with about 6" of wire.
I bought the bigger one in my 1st post. I had fabbed/relocated the mount for it with the old tray, so all I had to do was swap the tray.
Mine is moved forward from stock on rt side.