Figure 19 was indeed how my relay was wired. I had figured out that the internal pin connection wasn’t present on my relay by observation and volt meter but just chocked it up to DeTom/Ford documentation of teh era not being an exact science, sort of like having a D16Y and D46Y relay that are different parts but not identified as such
Where is the connector block in referenced figure 18? Is it up behind the dash somewhere? It appears from my wiring diagram that the other side of the connector block may go to the ignition switch? Is this the case?
The TSB is prescriptive but does not explain reason for the mod. Were people popping 30A fuse 10 with by raising the headlights with the other components on the circuit in simultaneous use…..maybe limiting current and headlight motor speed? Hmmm.
The configuration in my previous post is a fairly conventional motor reversing limit switch circuit that I have seen before. It doesn't do so well when a limit switch fails. I haven’t fully absorbed the Mike Drew article at the link in my previous post but I’m leaning toward that route.
Thanks again.
Kelly