The RS500 one around here is white mate - sorry!!

Indy mate, I've only ever seen the two that I took out of scrapped / broken E platers but when I checked out the microfische the change point was deffo beyond the 3dr point. Gary from RS Cosworth breakers in Portsmouth had one down there on an E as well, it was the first time I'd heard of it, but it went before I got there.

I've got some genuine Ford wiring diagrams here somewhere too - will dig them out and see what they say - maybe it was just a handful done like this and I struck lucky then?