This is where the remote solenoid was... 2 red/white wires, one brown wire. The slightly thicker RW wire on the right is the one that connected to the 12V spade connector on the starter motor. I have joined these together, took them apart for the photo

And here we have another 2 RW wires ! These are coming up from the wiring loom on the chassis (you can see the manifold in the background), The one in the background was the one attached to the Starter motor - that's the thick one from photo 1. However the one in the foreground was lying loose on the chassis - you can see it's got a spade terminal on it that someone has heat-wrapped - surely that's the original ignition wire ?

Anyway, I have connected these up in a variety of ways to the blue wire I put in that is connected to the starter motor 12V terminal (this blue wire is the one that when I touched it to the +VE battery terminal turned the starter motor over) - Nothing, not a peep. So now I'm going to go under the dashboard cut the RW wire there and connect the blue wire to it directly....when it stops raining