Need help with my Semi-Serious RP server!

Hello I’ve been trying to get a siren sound for my police cars for hours now and this is my last resort I think. Anyways I’m in need of a siren that you can press a button to activate the sound for cop cars, or if someone knows how to make a vehicle with wire sound attached to it and then like add it to RocketManias 3d car dealer. If anyone know please help me as soon as possible!

[editline]29th September 2014[/editline]

Would anyone like to tell me why this is “dumb” It’s a general question/help message.

Not the place to ask for help, please see Developer Discussion.