JLC5.0L

Recently my remoteless key entry (RKE) module shorted out in my 95 GT and I had to remove it from the rear of my car. At first I thought I would be fine with it, but now none of my interior lghts or door locks work. I was expecting the door locks, however I want my lights back. I order to fix this do I have to go buy another module and reprogram it? Has this happened to anyone else? Any help would be great