Stop in for a cup of coffee

When I moved the car yesterday, the ammeter started swinging way back and forth from nothing to 40 amps charge. It settles down after a few seconds but somethings not right. Fully charged battery. Must be a loose connection. I grabbed the DVM and its loosing over a 1/2 a volt to the regulator and a little less to the battery. Need to go over everything - especially the ignition circuit. That was the one with a problem before.
Alternator is noisy too. Soo I better fix at least one of the spares...