Jackpot Party wont give any tilt codes

I'm not so sure your door switch wiring has a wire missing.

On my Williams 40X machine there are only 2 wires going to the main door switch, same as yours except the black wire with gray tracer is on the top terminal but this won't make any difference. Neonkiss is right about the permanent ground wire being the one that is black with a gray (white?) tracer. But I don't have any doubled wires on the door switch, just 2 individual wires going to the door switch on separate terminals. I agree that you should try following the black wire with tracer back to where it goes and see if it is broken or smashed somewhere, maybe the other end is pulled out of a connector. The wire harnesses are not too big in size so hopefully you can follow it without a lot of trouble.

It looks like on my machine that the door switch ground wire (black/gray tracer) runs from the main door switch back thru a small wire harness to the right-rear corner of the machine, then upward to above the bill validator area. I didn't take things apart but it looks like 3 wires (one is black/orange tracer, the other two are black/gray tracer) go up to the area above the bill validator and near the right inside wall of machine to connect to the bill storage area access door switch. This switch is mounted to the top of the bill storage area to sense if the access door is opened. On my machine this switch has the wires disconnected so the machine will ignore this access door switch. But the two ground wires are still connected to each other inside the pink crimped terminal connector. And this is part of the daisy-chain for the ground wire circuit. Maybe this (or something like this) is the doubled ground connection Neonkiss is thinking of that could be your problem. You might check these black/gray tracer wires to see if they are intact, it could be that your main door switch ground wire is disconnected here.

Those cut wires you have (black/gray and black/aqua) are bundled up and tied back safely in the rear on my machine, not connected to anything. If the wires have any stray strands sticking out that might touch the metal chassis you can fold them back or cut them off more cleanly or stick a couple of small wire nuts on them. One is a ground so it wouldn't matter but the other is a sense wire, grounding it accidentally would cause a fault to get sensed. I didn't know they went to the stand's door lock but that makes sense. The casinos keep an overflow bucket down there to catch coins when the machine hopper is full. The stand has a door so the bucket can be emptied. This stand door has a lock with switch contacts that those wires connect to so the cpu can tell if that money area has been accessed, similar to the bill compartment on the side.