Ok, I gathered in some of that Andy, but im lost on 90% of it

Ok, i have a series 2 engine (came from a D reg car) with what i think to be series 1 wiring/ECU

As far as im aware, their is a plug for every sensor minus the knock sensor, which is ok.

I THINK their are 2 plugs that are different colours, and i assume they were plugged on correct, but this could be wrong
Brown and yellow ring a bell, cold start one is a diff colour, i think, need to check

Anyone know what S1 loom sensor plug colour goes onto S2 engine sensor colour? im SURE their was only 1 plug left and that was a diff colour from the one sensor left unplugged and i knew it wasnt the knock sensor so i put it on the left over plug

So far i have to check:

Fuse under dash (glass fuse)
sensor plug wiring.
accumulator (no fuel pressure in metering head in the morning

I think i need a full new loom

EFI it is then