I have a 96 nissan pickup that was running fine. The radio started going off then on continuously, the aribag light would come on then go off, the motor would start acting as if it had no power and start cutting out. I take the truck out of gear and rev the motor and it sounded as if it was OK. But if I shut the truck off, when I turn the key on it would do nothing as if it had a dead battery. After I let it sit for a while I could boost the truck and it would run fine then start doing all this over again. Any ideas as to what the problem may be?

My bet is that the alternator is bad. Here's how to easily test it yourself:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-10.html#post1973613