Did 318 intake, fires but won't start

I found intermittent power at the input to the ballast resistor. I was testing it and had no light and when I wiggled the huge mass of wires the light came on. I wiggled it back and forth and the light went on and off. So I know I have a bad wire somewhere in that mass of taped wires. I figured it went to the bulkhead connector and started wiggling the bigger wires one by one and found the problem on the second wire. I haven't repaired it yet, but I wiggled it to a spot where I had a constant light, turned the key and it fired right up and stayed running. I just have to fix the wire or connector, whichever it turns out to be, and I'm good to go. Thanks for all the help everyone!