Ampmeter flickering

I forgot to add that way back in the (early) 70's I found my first bad factory welded splice. This is the welded splice in the black ammeter wire up under the dash. The 68 Road Runner belonging to a friend suffered a flickering ammeter.

We had the dash and harness tore apart in his apartment lot, he thought I was nuts. I found the problem and was forever the hero.

Bear in mind that back in those days, I was a young Navy ET (electronics tech) and Al Gore's internet had not been invented. All I had to work with was my factory 69 service manual, and some tools, and a multimeter.