I have an 87 allante, that keeps showing that the tail lights, signal and brake lights are all out. I have checked and they all work and I've checked the fuses. Anyone have this problem before. Thanks in advance

 

Have you changed to LED bulbs? If so, that could be the reason for the DIC prompt.

 

I would check the sockets and connections at the tail lamps. Also you need to use the correct bulbs the lamp monitor is expecting a certain voltage when lights are on.
If that doesn't show anything I would PM Stealth our Allante' fanatic.