While beginning my Midway Blue Print mini restoration, I dig out the Blue Print UR wiring, transformers, etc. I acquired a while back (this is the best I could find, since the mini wiring harness, etc. is unobtainium). It was missing several pieces, but I believe I have found everything needed to restore the power section. What remains in reinstalling the MT-92 transformer (isolation transformer). Based upon the cut wires I see, it appears the factory wired the marquee ballast 115v wiring (BLU-GRY and BRN-W) to the MT-92 transformer and not the MT-87 transformer as shown in the manual schematics. If someone else sees this in their Blue Print UR, then it is good for us to document this schematics deviation here on KLOV, if it's not already here (probably is).
For the mini, there is no ballast since the marquee lights runs off the same 12v as the coin door lights mentioned below. Therefore, I will be abandoning/removing the wiring. That said, I will appreciate someone posting a clear picture of the wiring in/out of that MT-92 transformer. My MT-92 transformer is not well labeled and I am just trying to clean-up the wiring mess to make it look at least somewhat original.
The 12v coin door lights (O-W and GRY-R) wiring was also cut and it also go into the MT-92 transformer, so seeing that wiring will also help.
Thank you for any assistance you can provide.
Scott C.