MAD electrical upgrade modification?

Yeah, it's a personality issue I have. LOL. Drives my wife nuts. Complicating the simple. Part of my nature. Mostly, my bulkhead connector is fried and broken in that particular terminal where the ammeter leads goes through. I'm not fond of the whole set up but I really only have one bad terminal. I'm a big guy so crawling around under the dashboard is difficult, frustrating and downright uncomfortable. I like to lay everything out on my workbench, prepare all leads, terminals and connections. Then just drill a hole, thread 'em through and plug 'em in. This is my daily driver and my only car. I can't have her down for more than a few hours on a weekend. To each his own.

A point of failure common to all circuits and placed under the hood is what the factory provided. Beef all that up and failure point becomes multiple weaker points inside.