outside lights not flashing

the outside lights of my 1980 Cadillac Coupe no longer flash when disarming or arming the alarm; it started today and it has never done that before at all. All outside lights do work normally when light switch is pulled out. I checked under the dash for a fuse that the alarm wiring might have and I did not see one; I did see 3, one for the door locks, the power and the other???? but all are fine. Could it be a relay or a fuse that could wired in but  where? Any suggestions as to where to look, start?

Thanks

hi, thanks to those who responded, what I did was I removed the under panels of the dash and I exposed all the wiring to the alarm and the control unit. On the back of the control unit(module) it has what the wiring is or where it goes to so I was able to see which wire goes to the light output and I traced it to under the carpet, and honestly I felt I did nothing as I did not remove anything. Went outside and pressed the alarm button and the lights flashed. Model of the alarm is a Viper and I got installed more than 8 years ago. Only thing done was I needed a new remote as the old one gave it but it was programmed for the remote trunk release, how can I do that? I still kept the box in which the new remote came in.

Thanks

the original alarm came with two remotes which one was lost and the one that still worked eventually gave out; it was a 4 button remote, button one was to arm/disarm, button 2 was to release trunk, buttons 3 and 4 were not used.

When I got the new alarm they(audio express)no longer had an exact replacement as this model was no longer available so they used a different remote but they were able to program it to arm/disarm but they did not program it to release trunk. It is only a 2 button remote. So how can I do it myself, I kept the box the box in which the remote they used came in and I believe in the back it has instructions in how-to. Any help????