Two Times Can't be a Coincidence...Dart not Firing

Wasn't able to do much today. I tested those little crimps I did from the ECU wire to the ballast. A tiny tug and they both slipped right out. I went out and got a soldering gun...and then exchanged for another (wouldn't even melt the solder!) and did my first two wire solders (I don't think I did too bad :). Wrapped them in heat shrink and electrical tape, should be much better. Was able to turn the car on and let it idle, went through the gears. Didn't die like it did before when this happened for a second time (wasn't warmed all the way up). It was already dark out so I will be regapping spark plugs and checking my timing tomorrow. Just going through all the bases, checking everything now. Hopefully those loose wires were the problem.