Sorry I am not going to be any help other than to say, some of those problems sound like what my daughter's car is doing. She has a 92 Prism. First the radio stopped briefly when she put on the turn signals, then the radio died. She had just dropped off her brother and was trying to get home. Almost made it when it stopped dead in a turn lane at a busy intersection. She put on the hazards and they died very soon. No power of any kind.
We pushed it to a parking lot and jumped it. It started right up but there was a distinct rattling sound on acceleration while idling. The engine then started surging and died. Her battery is only about a year old. I put in an old battery that had been sitting around and was able to get home (the rattling had disappeared) but the radio would not work and the engine died when I tried the fans.
We also ran into the same problem with trying to shift it into neutral, but we eventually got it. Is there some kind of trick to that?