Hi Peter

Either my hangover is worse than I thought or your post is really hard to disect LOL

Autodata has a wiring diagram

Here is one FREE ways to help you get PICO images uploaded to your post

http://members4.boardhost.com/ukautotalk/msg/1355263951.html

CAM sensor supply comes from a fuse.

Did the Manifold gasket fix the high o2 reading or the airleak?

Was the car running to obtain the high o2 reading?

Does the car start and then stall since the manifold gasket repair?

Did you use an LED to check the CAM signal? or the PICO?

Is the fuel shut off switch circuit ok?

I am certain the guys will be able to help you get to the bottom of this one, but it is just hard to understand what is actually up with car.(for me anyway)

HTH
James

Ps
Try to use paragraphs for those of us who like a drink