just been having a read about this ,what a crap imobillser this car has
it look like you just need to run a live wire to the Stop-solenoid ...lol nuts what is the point in that
bit of info for you
You'll probably find the immobiliser is behind a reinforced cover, held on by sheer bolts and a roll pin - real pig to get off. Requires either an angle grinder or removal of the pump to get at it. There are four wires going to the immobiliser - a live feed and three code signals from the ECU. If the code matches that of the immobiliser the live feed is passed through to the stop solenoid, so you can't just replace the live feed. Of course you might be lucky and not have the cover, in which case just remove the immobiliser and identify the live feed and wire up to somewhere convenient to supply voltage to the stop solenoid when the ignition is on.
as i said this is just what i have read on the internet so might not be right