Can you scan this part of the schematic and post here please.

After a long deliberation in other threads, we have come to the conclusion that high ohm resistors in EM are there to protect switches from arcing, like a diode in a modern machine. In Bally the 8.1 KΩ is used for this purpose.
It would be good for all of us to see this bit of the schematic, thanks.

https://pinside.com/pinball/forum/topic/em-techs-%E2%80%93-question

Thanks for the upload.

The 8.2 KΩ will be there to protect the two SWs, see it is in parallel with Cam #5 SW and Mixer #2 SW, and high resistance. I would expect the Mixer #2 coil to be something like 100Ω (high number of windings) and cycles lots. The resistor will remove EMF effect and stop arcing of the contacts of the two SWs .

Now the 1800Ω, my guess , is like how a pinball flipper coil works. It allows the magnet to be high power when all 5 SWs are closed, then holds it at reduced power when only “search Wiper Cam” is closed and any of the other 4 SW are open. Like a flipper coil, to allow a longer time without burning out the ‘High Power’ coil!

The 15Ω resistor, changes the brightness of the “Search light”.

Remember, resistors are current limiting devices. When in parallel in a circuit like this have little to no effect on the circuit, but in series….

Have a think about my explanations, see if they work out in practice.