The Siren Board

Ok if this helps let's put it this way. Assuming a problem with one siren comes up (lets say there was an open circuit/ split wire that is causing the siren to not activate). I need to know how much it would cost to replace that.

The only thing I can see happening to a 2001 is the batteries getting cold in the winter. That is why they have heating blankets. I have no idea in the world why they were spending 3k on siren keep up. That is crazy.