This is the complete engine loom roughly laid out in the engine bay where it will branch around and over the motor. So far we've managed to position the ECU and wiring in such a way that very little will need to be tailored to make it all fit neatly.

The goal is to do as little cut'n'shut work as possible while still have a very neat and clean looking wiring layout.

The loom itself is quite heavy, and represents about a fifth of the wiring that's been removed from the donor Focus. While this loom will go in mostly complete the cabin wiring is being significantly altered removing everything except the immobiliser system and diagnostic ports. As part of that process two juntion boxes comprising the 3 segments between the two looms need to be cut out of the circuitry.

Is this were I mention we don't actually have a wiring diagram for the donor car?