Thanks for the offer but it sounds like I already have it, although in black and white. I'd noticed the dynamo regulator was still in there, so I guess it reflects the wiring of one of the Sabre 6's out there.
I'll need to create a new circuit diagram to include the heated screen, spots, manual reversing lamp etc., etc. (I don't have a clock, but I'd like a "Battery Condition Monitor" - see "Wanted")
Ashley-bodied TR3; '54 Ford Consul; '55 AC 2-Litre Saloon;'65 850 Mini; '70 Ford Zodiac MkIV; XR3i
'81 911SC Targa, '64 Sabre Six