RichardV6, many thanks for posting the vid. As they say every day is a school day, in that I had no idea that the starter solenoid design had two windings, though at least I can can understand why. I have stripped and repaired a few starters, and their solenoids, even down to reversing a burned and pitted copper disc in the solenoid, to extend it`s servicability, and never gave it a thought that there might be two coils within the solenoid.... Duh..!
My question re the possible advantage of a diode across the contacts in the relay, was related to the possibility of the diode quenching the back emf from the solenoid coil, when the relay contacts broke the circuit, thus perhaps the addition of a diode would extend contact life...and were that the case, the relay failure rate might be reduced..?
Also thanks for posting the pic of the relay with the diode across the coil, which from your description is there to protect later Morgans than mine, on which numerous functions are controlled by an ECU..
