Remote start
I had a Clifford alarm put in, It is almost the same as the viper, with the exception of the key pad. On some 01's and later models, they have had problems with the trucks computer going bad when they hooked into the wait to start light. and because of the warranty, they have to pay for a new computer, allot of them now are just putting in a timer, it can be set for 5,10,15, or 20 seconds. works just as good.