Starting to go through my wiring!

You've got the jest of it, however is there a reason you want to maintain the load carrying wires thru the bulk head? Not trying to be smart the wires to begin with were marginal at best from the factory, they are way under gauged, mine were like 12 gauge. The terminals them selves are only a 1/4" wide and they neck down to the crimp. What 67 Dart was getting at is to make the system as bullet proof as you can. Anything in an electrical system that creates a bottle neck is creating resistance and this is heat, every crimp, splice and connection. There's is a point where this becomes a continuous loop that keeps breaking down. I know your probably on a budget, I've been four years just getting mine to move on its own, but electrical isn't somewhere to rush. I understand the bulk of the electrical load won't be going thru the connector, but your installing an alternator that has 4 times the out put capability of the factory. Dodge did have a problem in the 80's on the trucks with dash fires due to the ammeter system and bulkhead connection. They started adding more accessories into the system which used more power and created issues. I worked in a family auto parts store during this time and saw a lot of things that shouldn't have been. We kept spare gauges from Dodge to resell. I'd make the system as good as I could. It will save you some money and head aches down the road. Plus it will give you some extra space in the connector to install accessories without making new holes. Just my opinion on it.