The stealership tried to sell me an alarm that was already installed in the car. (the finance guy was really bitter when I said I didn't want it) They said that if I didn't pay for it they were going to take it out. On my 04 Tacoma all I did to turn the keyless entry into a fully functioning alarm was unplug this wire under the dash and instal a glass breakeage sensor. Can I do the same thing on my new truck? I have done a search and am still not sure what the deal is. Any info is appreciated. Thanks.