Well its better than nothing in my opinion. I just expected the sound my dads z3 makes. After locking the door i expected to hear "Turn the popcorn over".

Also the nut on the siren housing never came off, i tried with all my might to break the nut loose and the whole siren housing just turned, giving me the impression that the nut on the other side is either loose now, or i stripped the opening where the bolt goes through. Anyways, i gave it a quarter turn in the opposite direction that i started with and its snug atleast. Im not too concerned, unless water pours down there?