Hi JBK +
maybe I am the only one (?) "who does not believe": In a pin wired as shown in the snippet of schematics (shown in post-1) - wire marked "green-white" - wire-marked-green-white soldered away from the solder-lug on the bridge-rectifier - and now: I do not believe that the bumpers can work (only having one-side-connection)".
Great - Your pin functions by now --- IF (if, if) You are interested to discuss "rectifier and fuse and solenoids and diode and switches and capacitor - how does this work": Write.
(((A shot / damaged capacitor acting faulty like an connecting wire: Would make the fuse(s) to blow)))
Greetings Rolf