Car wont start unless door is open

Welp. The entire dash is currently out of the car including ammeter. We pulled it and fixed a few problems behind the dash and it has been easier to work on.
We currently have the the two wires that go to the ammeter vice gripped.

Of course careful not to touch ground

forgot to mention that the bolt that holds the two wires for the ammeter was super corroded and didnt make good contact.