How can i mend my escort alarm?

Hi,\r\n
I have a Ford Escort (N85 JTM) which vandels cut through the wireing to the alarm. I have now re-connected the wires but i am getting an error code on the LED. 2 flashes then 5 flashes. If i turn the key of it seems to try ressetting again and beeps for ages.

Please, please help, I cannot lock my car at the moment as the Key does not work in the lock to re-open it. (Not linked, it has always been like this!)

Regards,

Roly