Ok here is a little background on the situation. My truck is a 85 extra cab with the 22re. When I got the truck someone had installed a viper alarm but it was unplugged. I wanted to get rid of the extra wiring so I began to take it out. As I removed it I would check to make sure the truck would still start and it would. That was last week, so tonight I got a new optima yellow top for it and put it in and it fired right up. I begin to check things like turn signals and hazard lights and they worked fine then I switched on the head lights and the truck quit. I tried to start it back and it would turn over but would not fire. As soon as I turned the lights back off it would fire right up. What is really confusing is that the lights still work even though it shuts the truck off. It seems like I must have a short somewhere. Or did I mess something up with the alarm? Anybody have any experience with alarm systems or run into a similar problem? Thanks for you help.