The three wire trick refers to the Orion Mk2's which ran the EFi fuel system. Your E plate if a fuel injection model will be MFi and as a result the wiring looms are completely different. The best/quickest way is to fit the whole Escort loom and then extend the wiring for the central locking and rear lights. You could try intergrating the Escort engine bay loom with the Orion's original interior loom for the more factory finish approach but that is quite alot of work. I know the guy that did mine did it this way and ended up cursing it a few times. Good luck with the conversion though. Nice to see another Orion mk2 turbo in Essex
