have a keyless entry on their SE,or did they all just buy aftermarket alarms? Did you install it yourself??

 

I got a keyless entry and aftermarket alarm on ebay and installed it myself. It's not too bad if you know basic stuff about wiring and connecting wires. Mine arms the nissan alarm when it locks with the button and disarms with unlock too.
Check out my website (below) for info on wire colors you will need to do it and email me if you have any more questions or IM (gtwhoo)