Cranks but won't start. Unplug ground at field spade on Alternator and it starts?

I still get a crank no start some times. But I don't think its the cars wiring.

If I jump a wire from + battery to Ign 1 at ballast resistor connector (key off) OR put key in Run I got the following:

Ign 1 at VR: 1.3 volt drop
Ign 1 at VR, Unilite unplugged, .8 volt drop

If I run wire from + battery to VR with Ign 1 disconnected I get .19 volt drop.

So if I get same voltage drop jumping battery straight to Ign 1 key off by passing ALL wiring in the car it seems like excessive drain at VR. Also the pin I push into Ign 1 connector is hot when I remove it indicating excessive current

I measure 4.6 amps between Ign 1 and VR and 4.8 amps across field circuit. Was 3.4 amps a week or so ago.