Hello JMcL.
I have a 2002 Rover V8 with Gems engine management. The links you have in gomog work ok for me.
Try gomog again.
One thing to note, however, is that the diagrams may be different to what is actually on your car. Wire colour codes might differ, etc.. The fuse box is another victim of Morgan variability too! Do you have the small laminated fusebox chart?
I have print outs of the diagrams ( may be saved as pdf files on the computer too) and could pass them on if you cannot get them via the gomog site.
Working on the Morgan electrics is fun......