Thanks TT, that helps enormously. Thanks to Lee as well, the diagram you have makes it much clearer than the haynes one. One thing that was confusing me is that in the Haynes diagram the feed from the ignition switch goes off to the alarm system and then comes back to the ECU feed relay. It looks like all I have to do is get a permanent live to pin 1, a switched live via relay XI to pins 37 and 57 and my earths in place to make it work. I just cross referenced to the Haynes manual and the pin outs seem to match to TT's diagram. Happy days. I assume the alarm had a simple immobiliser function - anybody know if that is correct?
Thanks a lot for all the help, guys, that has been of enormous assistance.
Enoch