Let me look under the PF I have and see what it has.

No jumper on the expander on my PF. Assuming that there was only one expander.

Looking at the prints for the expander:

http://mirror2.ipdb.org/files/2270/Bally_1982_Speakeasy_Schematics.pdf

There is no information on if that jumper is supposed to be in or out. But that jumper connects +43VDC (pin 9) to the center tap of the SPDT switch in the relay (pin 4) and pin 4 goes back to the transformer 43VAC. Somehow I think thats a bad thing.

The roulette motor should be using 43VAC off the xformer and that relay should be turning it on and off with a signal from the controlled GI logic.

I'm betting jumper should be out.

You're in the home stretch now.

With the door open you should be able to flex the harness going to the head and isolate the problem.

Wow didn't realize you were still working on this machine! Grats on finally getting it running!

Max credits to 0 maybe?