Car wont start unless door is open

Hey everyone. I have an interesting electrical and ignition issue.

So I have a 73 dart sport that now has a 360. We pulled it out of a field where it had been sitting for 20 years. We got it running and running pretty well. However, we recently replaced plugs, plug wires, dist. cap, new rotor, and coil.

We just now notices that the car only starts when the door is open. Which means the buzzer is buzzing and the dome light is on. I did further testing and realized that the dome light has no effect on when the car runs or not. Thats simple. There were to wires that went to the door switch. One for buzzer and one for dome light. However, when the buzzer is grounded, the car starts every single time. And when the buzzer is not touching anything, it doesnt start.

I followed a few wiring diagrams and cant figure anything out. I feel like its a short but im not sure how or why the car starts when the buzzer wire is grounded.



Thanks, Andrew