Help Needed!! 94 Grand Prix going Haywire!!!

Hello all. I have a 94 Grand Prix and I'm having an issue with almost everything electronic in my car. I think the computer is going bad, but I'm not sure. The gauges go crazy pegging out and then dropping to nothing, lights dimming, and the engine feeling like it's ready to stall. :banghead: All of the interior lights grow dim when this is happening as well. It is intermitent, but is happening more and more frequently. If anyone has any suggestions or ways to fix this, your help is greatly appreciated!!

Cheers!
Agapet

have you checked you battery cables? Maybe also have the alternator bench tested.