very weak spark

Stopped by NAPA during lunch today and got a condensor. Tonight I put it on and it started right up. Funny thing is that the guy I got it from said he just put new plugs, condensor, points, rotor, cap and wires on but he couldnt get it to fire. He even gave me the receipt for them. Of course it was parts from auto zone! Once it was running it had a dead miss. I pulled wires off of each plug and found 5 & 7 without spark. Checked resistance in wires and all looks good. Then went to start it up again and nothing. Now it has current to the main lug on the starter relay, and off the relay to the fuse block. Did not check it farther then that tonight. I do know that I have no power to the fuse block either. I dont know if it had power there originally or not. If i put a jumper from the positive of the battery to the ballast and jump across the relay it will start and run. I am guessing a bad starter relay.
I'm not planning on using this engine so I dont want to invest much in it. I'm going to go to a local garage that works on a lot of chryslers and see if they would have any old wires and distributor cap. Hoping maybe even a relay.
Any ideas? I feel like I bought a car bubba owned!
Thanks
Rodney