Here's the pics.  Body harness are the dirty ones.  Totally different.

The color wiring diagram doesn't make things clearer.  Two blues.  Oh well.

Edit - actually, compared to your picture it does make more sense.  The FSM seems to be off.

 

 

Edited February 19, 20223 yr by Zed Head

glad you got it going. The thing about mechanical stuff is you need to actually use it, long periods of inactivity are not good for moving parts.

Very good news, glad it's up and running correctly.   Now, when it's all buttoned up, you need to monitor it to make sure it solved your original issue.

Don't forget to replace that blue paint on the cover screw to maintain originality ...

I've driven the new mechanical regulator long enough, since popping loose the contact, that the spiking would have appeared.  And, it has not.  So, the spiking problem was likely the solid state replacement that was in there.  It had evidence of problems (cracked base).  Thanks again guys.

Thanks for updating. It may help someone in the future with a similar problem.