Alarms are a complete pain in the a$$, ask.. pretty much anyone with an aftermarket one, possibly unless they owned the car when it was fitted. Or ask any garage mechanic. If it's giving problems, remove it. Don't let it affect your opinion on the rest of the car .

__________________
190E's:
2.5-16v 1990 90,000m Astral Silver
2.0E 8v 1986 107,000m Black 2nd owner
http://www.maylane.demon.co.uk/190esmall.jpghttp://www.maylane.demon.co.uk/190esmall2.jpg