I assume your "jumpering" is being done with the Electroswitch in place - as in normal?
And when you turn the key off (push in) Electrosw grounds the live circuit?
Um - that is what it is supposed to do and indicates the armor cable and that part of the switch action is ok.
Electroswitch is set up to make the center cable "live" on pop-out and "grounded" on push-in/lock.
What may not be ok is the contact in the switch which makes the center wire "live."
You may have an issue with the wiring feeding the Electroswitch. Check out the wiring diagram at
https://lesmodela.files.wordpress.co...ng-diagram.pdf The red wire is what I would look at.
Joe K