Running rough when warm

Yes and yes. I have an edelbrock rpm performer intake and edelbrock 600 carb. I had an electrical fire under the hood about a year ago and I got a wire harness out of a 74 dart and wired it myself. Just the basic wiring, nothing fancy. However, I'm not positive I have the alternator, voltage reg., ballast resistor, starter relay, wired exactly as it should be. It shows about 14 volts during the day and 12 at night and doesn't appear to be draining the battery w/ the headlights on so I'm leaning toward I might have finally gotten it right. It was a nightmare to me to find a diagram that showed all the electrical on the same diagram. I bought a 4 prong ballast resistor but couldn't seem to get it right so I went w/ the 2 prong resistor. Shouldn't I be able to unhook either the pos. or neg. battery cable and the engine continue to run if it's wired right? I can't remember which to unhook but the engine dies when either is disconnected. I know I've read not to do that but I've been told if it doesn't continue to run, it's not wired right. Is that true or not?