You might want to check with the dealer about voiding the warranty if someone else installs an alarm. On one of my previous cars, I was told that if they didn't do it (they actually subbed it out, but it was done at the dealership) and there were some type of electrical problem in the future, it might not be covered by the car warranty. I did have a problem with my radio, and the dealer did replace it with a new one. Not sure if they would have if I had someone else do the alarm install. With all the electronics and computers in new cars these days, it probably would be worth it to pay more to have the dealer do it.