1990 110 V8 electrical diagram

I've searched high and low on here for a link to an electrical diagram for a 1990 110 V8... I've got a couple of Haynes manuals (!) for Defender (diesel) and Disco, which covers most of the engine side... but a proper electrical diagram would be really useful... probably is a link somewhere but her indoors insists I couldn't find my @rse with a map and mirror
Current problem is no power to the fuel pump... no real idea where to start looking, don't really want to start dismantling in case I stuff up something else
Any ideas hints or tips gratefully received...