Just jumping on this thread, I’ve got a fez st150 with a focus rs mk1 engine and box going in . Just some advice needed on which way to go with the wiring 😳 I’ve got the frs ecu and a loom that has been spliced into a fiesta one , it needs a bit of work but do you think I should get on with that or go aftermarket? The cluster was missing and what looks like a bike one fitted. Would the st cluster not communicate with the frs ecu. Thanks for any answers👍