Gentlemen, please note that Mark Willows didn’t discover the two service bulletins from 1965 and 1966; I did from scouring the internet. So if there is an error here in the E-Type clock inference (still to be determined), it’s mine, not his.
However, Mark does claim that the transistorized clocks do not have contacts. (Note: he also doesn’t have a repair kit for them.)
It’s the first service bulletin from 1965 that makes the contradictory claim that the clocks are both tranistorized and the gold plated contacts chatter and burn.
What Jaguar in 1965 had a transistorized clock?
Perhaps “transistorized” refers to the diode that was added to later clocks to help prevent the contacts from burning? That would solve the mystery of the service bulletin’s contradictory claim.