Success! Thank you all. Interestingly, the RR allowed the voltage to run up as high as 15.4V before it settled down to a steady 14.4. (V confirmed by digital MM).
Thank you all, and hopefully those coming after me will benefit from this post, and not bother you as much as I did :)
I can see the jumper is missing - you are absolutely correct. Clearly, someone has been "into" this terminal block before me, causing me to wonder if the wires in each of the slots are in the spaces that they were intended to be from new. If they aren't, then putting in a jumper may cause some...
Update: New RR has arrived. The Yellow/Yellow/Grey leads seem to be a simple match to replace. The new RR has Red & Brown leads (battery & ground(?), and the old RR has a Red and Purple. The Red is an obvious match to replace. Does the new Brown replace the old Purple?
RR Part # 584476. Grounding appears to be solid. The red wire appears in good condition.
RR grounding wire travels from the base of the RR to the assembly mounting bold to the left.
Pic 1 shows the RR mount.
Pic 2 shows the wire terminating on the left side of the RR, secured to the...
Test Complete - (relatively) steady 25 V AC across the 2 yellow leads (Wires 1&2 in the pic). For the test, I left them connected to the terminal block.
Ahhhh you are wise! It does have T&T and it does work. I just checked traced the red wire from the solenoid and it travels through a 20 amp fuse and goes to the terminal block, at the post just left of the thick red wire from the rectifier. From there it goes to the T&T wires. It would seem...
This "new-to-me engine" ran great all season but didn't charge the battery. Now time to troubleshoot it. Right away, I can see that the red wire from the rectifier is not connected to anything - see pic. The screw used to secure it to the black connection block is obviously not factory and...
