I actually took this a step further...I tied into the factory Becker alarm system with my aftermarket wireless alarm. Now, when you arm the alarm with the wireless remote, BOTH alarms arm. Also, when you insert a key into the driver's, passenger's or trunk lock and twist, you can roll up the windows for as long as you keep the key turned...just like the new cars (that's why I had to tie into the factory Becker alarm module).