I herd the term "Problematic starter relays" from Ford motorhome owners over in the irv2 Fleetwood forum.
I posted an issue with a Southwind motorhome that is having a no start issue. Guess what I found? A "problem" with the starter relay in the upper left corner in the doghouse looking from the backend looking forward.
The relay was not passing voltage down to the starter "solenoid".
So, i picked up the term problematic from owners of the older Ford chassis owners.
This is the relay I am referring to;
https://www.napaonline.com/en/p/ECHST40?cid=paidsearch_shopping_dcoe_google&campaign=GSC-Alternators-Starters&campaign_id=6503920054&adgroup_id=73349362010&adtype=pla_with_promotion&gclid=Cj0KCQiAh4j-BRCsARIsAGeV12CmzP5ndiWZYJyGQVecOzS26dL-MKyXB0p6PAwkkmua669pCCLbX8QaAhrkEALw_wcBHere's a simple schematic of how its wired. I did run across a Ford schematic but can't locate;
https://images.app.goo.gl/9cw3i41d67eLYEYK6SO, We are talking BOTH a relay and solenoid in the starting curcuit.
Not sure how many years these relays where used, thus my post.