i want to add a second 6 tone sirin to my alarm (viper) beciouse i dont really think its loud enoph,i found a 6 tone sirin..and i will splice in to my existing sirin to install it, but i was just wondering if it will do any damage or will my alarm have enoph power to set off both sirins?

THANKS!

 

Run a relay to the current siren. This way you have a direct power source for the second siren, and it will activate when the first one goes on. The trick is that the relay uses relatively no power off of the spliced wire. It just notices that the primary on is on, so it tells the power to go on from the power line. Remember to use an in line fuse too.