Noise in 340...help

Drag 340 might have something. The wire that I found that I knocked off "seemed" to go from the electronic ignition module to the ballast resistor. I looked online before I attached it there and from my reading it appeared obvious that's where it went....since immediately upon attaching there the car started. Drag340 is suggesting that I may have attached it at the wrong terminal causing an ignition problem/noise. As a matter of fact the noise the car made upon start-up reminded me of another 340 I had that had a timing issue at one time. But that car didn't knock AFTER start-up. The wire in question is light blue with a yellow stripe. I attached it to the left terminal on the ballast resistor. The other terminal had two wires connected to it running from the voltage regulator. Again.....your suggestions are welcomed.

The wire you described sounds like the power wire to the ballast resistor. It won't run without it and I can't figure out how you could have connected it wrong anyway as there is nothing else close by it may have gone on, Is there? Your best bet is to describe the sound better like GuitarJones said. Then maybe we can help more.