HI thanks for your replies, they have been helpful. I have had a look at the bell boxes today and closed the loop on them, but still the control panel is showing bell tamper, also the back bell box that was working is now not working again. I was wondering if this might be something in the main alarm box and if so have you any ideas has to what i can check? I would be grateful if anyone has any ideas if you could give me the procedure that i need to follow as im afraid to say where the alarm panel is concerned its like a barage of wires. any information would be greatly received.

Thank you once again