1976 Gottlieb Royal Flush. When I power it on, the Q and U relays energize as they should, but the H relay (Tilt Hold) does not. If I hold it in manually the game seems to work correctly (all the way through a 3-ball game). I removed and tested the coil ohms and got 32 or 34. I also tone tested the coil wire back to the Jones plug. Can someone explain exactly how I can use alligator clips to try and manually fire this coil? Or, any other ideas on how to test this circuit?

thanks for the reply @howardr. I will study those links. I'm confused on where to connect the clips for a test.

I would still like to understand how to bypass this for future reference and learning. This would be a great troubleshooting step.
Am I jumpering each set of switches on the relay? I don't think so, but that's an option. If I'm jumpering the coil itself, I'm wondering how.
black side - maybe I jumper the black side of the coil to any other black side of another coil. Is that the power side?
color wire side - no clue.
Am I jumpering across the coil itself? I don't think I want to do that without confirming first.

Turns out, this coil started working the next time I tried it. It's holding pretty well now. Maybe that means it's just old and weak. I'm planning to replace it with the Clay-recommended A-16890 half-wave fix, like I've already done with the other 2 continuous hold relays.

If we're talking about testing the individual switches on that relay, yes I understand. I was looking for a way to ground the relay coil to try and force it to fire. I was hoping that would tell me 1-if the coil was good/dead and 2-whether the play issues were because of the relay not activating.

Do you know how to ground an EM coil and force it to activate? Where do I put the clip wires?