Greetings,
>I spent some time perusing the Haynes manual this evening - noticed
>something interesting. MK IV Spits had a relay in the O/D wiring, but
>1500's did not.
Earlier cars with the D type O/D had a different solenoid with
"pull in" and "hold" windings. It pulled more current and needed
the relay.
>Pros and cons?
As you mentioned:
Pros = less stress on the switch even with later J type O/D.
Cons = More parts with more wiring to go wrong.
LBC'ing U,
--
Bob Sykes (& '78 Spitfires)
[digest impaired]
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