Amp Meter Jumping & Head Lights Flickering.

You're gonna give up that easy...

It's either a short or a ground issue...

Did you look for any wires under the dash that could have some missing insulation and grounding out...

Run it at night an look for sparks jumping in the dark...
Isn't there a common ground under the dash that is just a group of wires twisted together with black tape on them? Problem area?