I've done my best to search the forum and other places, but I cannot find a guide on how to wire a spinner to a WPC89 pin that currently does not have one. My idea would be to add a Stern spinner assembly (https://www.marcospecialties.com/pinball-parts/511-5113-00) to a game, then wire the spinner to the pops so that it scores/banks points in the equivalent amount as when a pop bumper fires.
My first thought is to just jumper the wires to the wires on one of the pop bumper leaf switches, but didn't know electronically if this would be an issue or not (while I can troubleshoot and make basic electrical repairs, I don't fully understand electronics).
Anyway, any advice is greatly appreciated.