Genuine question or not, you won't get your answer from here.
Sorry but think about the nature of your question,and how an answer may help you,but compromise everyone else's security.
Figure it out yourself or call a pro in,I also would like to warn you of the high voltages within the sounder,especially the highly dangerous voltages that run the strobe tube.
Take extra care,but you really need a pro out to it.
e manno, June 2012