Could anyone help me?

[spencra]

Okay, I bought this 67 last April and the guy that I had bought it from said that it ran and that all that it needed was a starter. Finally I went out and bought a starter yesterday and put it in today. Sure enough with a little bit of starter fluid and a jump That thing fired right up. It purred like a kitten, no strange noises or knocks a little smoke at first but the thing hasn't been started in at least three years and had old gas in it. So I shut it down and went out to get some dry gas, carb cleaner and gas treatment and dumped it in the tank. It needed a little help getting fired back up again but when it was running it sounded great. I let it run for like 20min to a half hour and then I went back out and it was still running smooth. I figured that before I turned it off that I would try all of the lights, wipers and all of the other bells and whistles. Then I turned it off. Immediately I tried to fire it back up and got absolutely nothing. No noise, lights, anything. I took out the battery tester and it shows a full charge. I'm stumped here, can anybody help me out?
Thanks,
Larry