No Start, ignition and ammeter problems

First, some background info

66 Dodge dart 273 convert GT
Aftermarket alternator with higher output (60amps?)
Aftermarket Mallory dist.
Aftermarket MSD ignition box
Ignition ballast was removed before I got it

And here is the story...
Siopped to fill up and when I tried to start if there was nothing. No click, no starter, no lights, nothing. The tow truck guy comes and we try to jump it and this does nothing. We hook up his battery to the battery post of the alternator, and vroom she fires right up. I put it into drive and it dies instantly. So we tow it to my house.

I notice the black wire from the starter solonoid to the starter relay has lost its insulation, so I replace it. Nothing. I replace the starter relay, Nothing. It still will fire up if I put 12V to the alternator. I increased the idle and now I can drive it around just fine, as long as I dont turn the engine off. When it runs everything works great except for the ammeter, it does not move.

My next thought is the fusable link, but the wiring is wack and someone made some changes to it. I cant find the fusable link wire that goes from the Batt terminal on the starter relay to the Z on the bulk head connector which should ultimately go to the ammeter. It has been replaced with an afertmarket pink (I think 16 gauge) wire. Tomorrow I will try to find where that goes.

So whats up? Maybe the ignition switch? It did have 12v going to it via the J1 red wire.

Any ideas from the vast knowledge of the a bodies only forum? :prayer: