Troubleshooting help wanted!

So you guys are making me lazy, instead of grabbing my volt-o-meter maybe you can steer me in the right direction I'm kind of scratching my head. I started the 340 swinger yesterday and after running about 30 seconds it just died quickly. As I try to restart it nothing, no cranking no clicking nothing. Headlights and blinkers are working any insight would be appreciated.