To those of you who've installed an aftermarket alarm system on your 2000-2004 S40 (and also have NOT had the factory alarm physically removed from the car):

1) do you have any problems getting the alarm to work correctly with your car?

2) do all the features such as automatic relocking of driver side door after 2 minutes, auto locking of the gas door, and the interior lights FADING in or out as you unlock/lock the car also work correctly after installing an aftermarket alarm?

3) Also, what alarm do you have (be specific) and where did you purchase it?

I'm asking all of this because I've talked to everyone from the dealer to Circuit City to mom-and-pop installation shops and I'm getting conflicting answers as to whether or not everything will work right with an aftermarket alarm and my 2004 S40.

Thanks in advance,

Marty