Okay I first started of with a bad Alternator so I replaced that, the battery (it was old) and the terminals on the battery because they were corroded. I drove the car for a little while, and at which time I noticed that if I were to bring the care above 1800 RPM's all of my dash lights would come on as if the car were put accessory mode. I thought nothing of it until I realized that my car was once again dying. I pulled the car over, and proceeded to re-pull the Alternator, bring it to Autozone and get it checked and they said it was good. I put the alternator back in and the problem is still there. I also changed the belt for the Alternator, and it is tight, the fan pulley, (water pump pulley) and the Alternator pulley are both spinning fine with no squeaks or noises. I have no idea what to do. I am in the Army and don't have any real access to people I know back home to help me. I checked all the fuses as well and the only one that was bad was the radio which is good because my radio works now but the car still dies. I also took the negative terminal off of the battery while the car was at idle, which it works fine at idle, but with the negative connected I rev it above 1800 RPM's all the dash lights come on for about one second and bam, the car dies again. Is there an external voltage regulator on these cars? Or is it in the Alternator? Oh and BTW, my car as A Naturally Aspirated 5spd 1985 300ZX, 2 seater. Please if someone knows what is going on with my car I could really use it, I need this car because it's my freedom from living in the Barracks. HELP!