autowatch 77rl, 1988 petrol escort gl1.6

,I have a AutoWatch S-line 77RL alarm and imobiliser  fitted to my 1988 petrol Escort  GL1.6. I have always worried that if it went wrong, how would I be able to disable it to keep using the car. Did anyone find out any more than the link  I  also a hidden switch that has been disconnected - if this is the Valet switch - would anyone  know how it is used as the manual I now have does not say what sequence is used to disable the alarm or what options are available. Any reply would be very appreciated. , Thank you.

does your 77Rl have all black wires or multicolour?You can tell whether a man is clever by his answers. You can tell whether a man is wise by his questions