So I’ve been fighting a problem with this 72 GT. It doesn’t crank very strongly, and kills the batteries (usually fully charged) quite quickly. I’ve replaced all of the ignition components from battery all the way down to the starter. I can only assume it’s a problem with a ground somewhere. Does anyone have a wiring diagram that can show me all of the correct engine and body grounds? The one ground going from the block to the firewall is intact, otherwise I don’t see any others.