My super soccer won't switch from player 3 to player 4, and if I manually switch to player 4, the machine will never switch back to player 1.

I believe the issue is with the bank of switches behind the rivet wheel (sorry - I have no idea what this thing is called). I would be grateful if someone could get me headed in the right direction to solve the problem.

My next question relates to schematics. I bought a set on ebay, but I think the seller sent me an incomplete set. The legend on the schematics implies that what I received is only a subset of the full schematics set. Can someone tell me if I'm missing the main schematics or if the legend is just misleading?

Thanks in advance

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Thanks for the quick replies (this community is awesome). I'm new to pinball so I have to learn how to read the schematic. Is there a good thread/link that you would suggest I read to translate what I see on the page into the jumble of wires and switches in the cab?

Ordered. Thanks much