I added a Bulldog Security Model
RS1300E Remote start / alarm / keyless entry to my 1996 Caravan. It wasnt all that bad. There were some resistors I had to put in to get the electric door locks to work with it but otherwise if you feel comfortable splicing wires etc its not to bad. The bulldog brand came with a installation video and all the tools needed.
Model RS1300E Starter
Two four button extended range remote transmitters
Range Up to 800 feet
[ul][/ul][*]Dedicated start and stop buttons
[ul][/ul][*]Parking light confirmation
[ul][/ul][*]Keyless entry
[ul][/ul][*]Remote trunk release
[ul][/ul][*]Automatic cold start
[ul][/ul][*]Automatic hot start
[ul][/ul][*]Automatic start
[ul][/ul][*]Dome light Supervision