Hi guys. Am currently fitting a puma running gear to my brothers Fiesta Zetec S, engine all in etc but have to finish off the loom now. Was just wandering if the dash has to completely out or is there a knack of getting to the ecu at all?

Also there's 4 wires that have been cut. I know one is yellow/green i think. I take it I just colour match them and solder them up?

Cheers in advance