Having a weird problem. Power to my Duster's ignition system dies when I turn the key to start. I can start the car by bumping the relay with key in the run position. Any one else had this problem and have a cure?

Ryan "Bigs" '73 Duster (BLKDUST) - Black, 100% factory sheet metal, flat hood, 346 cid, J Heads, and a bench seat. http://s268.photobucket.com/albums/jj1/bigsbigelow/ Best to date: 12.40 @ 109 mph