I completely tore down my fully working jungle queen cabinet and playfield to perform a full restoration. Upon reassembly, I'm unable to get it to complete the start sequence. In checking the relays, I'm finding on "Q" (game over) that I have continuity between the make or break stack blade marked with an arrow (black/ yellow) and the middle blade (yellow/ blue). I pulled apart and completely seperated the stack and get the same result.

When I pull the pictured lightbox Jones plug, continuity is lost. I get it back when I jumper the wires with the jumpers on them in the picture.

Using the contact point of the Yellow/ blue wire at the coin unit gives same result.
I'm weak reading schematics (and working on em's), so can take additional pictures if more of them are needed for reference.

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Thanks for the response. I went back through the startup sequence, and figured out that under a scrap of good wrapper, my game over relay coil was fried. I replaced it as well the crispy ball 1 relay coil.
Game starts now, but will not advance past player 1 ball 1. Everything scores as it should, but when the ball drains, nothing resets and it just stays in an infinite loop of player one ball one.
Replay button adds players, and if I manually advance the player unit, it switches players and advances balls, but it will stay on whatever player and ball I leave it on, and game won't end even if I advance all the way through.
According to the startup sequence, everything works like it should up until after step 9.
I've inspected everything in the described sequence and schematic, and it all looks like it should.
I'd like to try jumpers to isolate the problem, but not sure where to start bypassing components.

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It does when the trough switch is activated after the ball is kicked out of the outhole.
Switches on the relay appear clean and adjusted as well.

I was able to previously find that circuit in my schematics. What I struggle with is where exactly to place the jumpers along the way. What should be my first points, and am I looking for the wire colors and the associated leaf of the switch or coil they're attached to?
For example, I found brn/wht/red on the U relay switch and then jumped it to same color on player unit coil, and the coil fired and player advanced. What's my next move?
Should one end of my jumper always be on the player unit coil?

I figured out the jumper method and where to apply them and the player unit coil fired along each step. In doing that, I realized I've been diagnosing the wrong problem. The ball count wouldn't advance past ball one and my ball one relay wasn't staying energized after drain. If I manually held it in when it crossed the trough switch, everything worked as it should. I went through the schematic and cleaned the 4b switch and made some minor U relay adjustments. It's a miracle! The game started and played exactly like it should for exactly two games.
Now at game over, pushing the start button activates score motor and reset banks, but AX relay won't energize. If manually pressed in game continues as it should. I'm digging into diagnosing that problem right now.