bypassing C180 immobiliser

[Dan1281]

i wonder if anyone could help me with this problem, my aunty was going down the road and her C180 just stopped dead, now its sparking properly, the fuel pump is working, and it will run ir you spray petrol in the inlet manifold, so this leads me to belive that the fuel injection system is playing up, i have tried to turn the alarm with the key but when i have looked the at the alarm it seems that all the wires have been butcherd and played about with

i need to know if there is a way to bypass the immobiliser so the injection system will work, if anyone has some wiring diagrams they would be vary usefull aswell

thanks
Dan