But the Coin relay won't drop out until the Game over relay changes state. The G.O. relay is forced on as long as the Lock relay is not energized or any normal tilts are stuck closed.
mcgo (resized).JPG

The Lock will not hold in if any kick off switches (Slam switch on bottom board) is open (should be normally closed).
mclock (resized).JPG
But RESET will never release until all 4 score reels are at zero (see lowest switch on snipet above). So, the OP should manually set all 4 score reels to 0 first (you can see in the OP's video that the score is sitting at 1000) and see if the reset cycle will end after coin drop. Then, he can see if the score reels can zero themselves if set to 1,111.

Oddly enough, Magic City would appear to NOT be one of those games that pressing the left flipper button will turn on the lock relay (and light the lights).

All solid yellow wires are the same. No harm in connecting it to the other one. Use an aligator clip jumper and see what happens.

Ball count is a mystery. Perhaps in case some ends a game with balls remaining and they wanted to wait until the ball count stepper went to zero before sdding the 1000's reel?