Best bet if its a mk3 is to use a fiesta turbo engine loom and just extend it to get everything in the desired places. if you untape the mfi loom its fairly simple to separate the engine loom from the loom for lights, fan, horn ect. after you cut the mfi engine loom out you will end up with 4 wires from what i remember, the above website will tell where these need to be connected on the new efi loom.
Hope this helps, Mark