watacivic

my 95 dx just sits in the parking lot now as i have another car. i start the civic up few times a week and lately it has been dying out. on saturday, i started it up and took it down the street and back. everything seemed fine until i turned the radio on. after i turned the radio, within less than 5 mins, the car dies out. i changed out the main relay and it started up really fast and strong. i pressed "6" and "5" and the cd player and the car suddenly just dies out. Then, i unplugged everything behind the cd player and changed out the ignition fuse. Strangely, the car started up fine and drove it into the garage and proceeded to connect all the wires back. Subs were not on at all but the highs were. within about 2 mins, after all wires are connected, the car suddenly just died out again. That was the end. i tried starting it again about an hour later and nothing happened. Please help!! it would be greatly appreciated.

The car has a viper791 alarm without remote start hooked up. stereo system no more than 500 watts. stock engine with just bolt ons. alternator about 2 years old. battery less than 1 year. new dizzy, wires, fuel pump, etc. fuel pump primes.