Hi can any one point me in the direction were i can find a wiring diagram for my disco eg a link

How about saying hello in the welcome section and have a read around the site or search the site try searching for "rave"

And.... there's more than just one diagram so do you want the lot?, if so get yourself a Haynes manual they are all in there.

I bought a Haynes manual for my Disco and yes it does have most of the usual wiring diagram stuff but it shows nothing of the immobiliser systems [which is the bit I need].

Does the Rave disc contain 'ALL' the wiring diagrams? including immobiliser.

My 300 tdi is a 1997 model with no spider unit but instead has a black box [fed by several wires] on the diesel injector pump, this covers [and I assume powers] the stop solenoid. This isn't the EDC type with fly by wire throttle as mine has a throttle cable and EGR system. After a bit of a melt down of the wiring harness I need to find out how it all works and where things are fed from.