I have a viper alarm installed and wanted to install more sirens to the already 1 installed, I bought 3 more dei 514n sirens to add for a total of 4 sirens.



Could I just tap into the already installed on that came with the alarm? or do I need to buy something to install them? any ideas?

 

If they only get power and make their own noise you might want to use the power to switch a relay so you don't burn out whatever is feeding them power. If they are fed a specific signal/tone instead of just power, contact the manufacturer or your manual to be sure you can add sirens without overloading the system.