Good questions raised by doc. You need to specify exactly what you are looking to accomplish. I'm not too familiar with Dodge but when I went to look into buying a remote start for my wife's '99 Voyager the salesman asked my what color key I had. If I remember he said mine didn't have passive anti-theft because I had a black plastic key (see attached photo). I think he said my van would have had a gray plastic key if it had anti-theft. '98 could be completely different. I know for the remote starts they do make by-passes for these systems but I don't know the details. One thing you should keep in mind also is most newer vehicles have multiple modules that not only retain information but communicate with each other. Newer GM's have Powertrain Control Modules, Body Control Modules, Door Modules, Instrument Cluster Modules, etc.. I would advise a kill device that would only interrupt your ignition/start system and not kill power to the whole vehicle thereby forcing your modules to do a 'relearn' every time you reconnect power. That would be like constantly unplugging your home PC from the wall without allowing it do do a proper shut-down. Just a thought.
