57_35HPGenjpgwiringbigtwin-solenoid

In the attached wiring diagram it shows no ground jumper on the motor side switch terminal for the solenoid.  The way the solenoid was wired in at the junction box when I got it there was a jumper wire.  Should this jumper be added back in or should it be wired like the original diagram?  I’m not sure if there was a recommendation to add this jumper later as a safety measure? I seem to recall Frank Robb talking about not grounding marine solenoids but that might have been more to make a point as to the distinction between automotive and marine.

I apologize for all the questions as I am trying to wrap up the fine details before the boat parade on the 4th!!

Jeff