The wire going from your ignition switch inside the car to the + side of the coil is a resistor wire. So take that wire off for noww. Take a length of 12 gauge wire and run it from the positive post of the battery to one side of a toggle switch. From the other side of the toggle switch run another wire to one side of a ballast resistor. from the other side of the ballast resistor run another wire back to the + side of the coil. That should be the only wire on the + side of the coil. Basically what you're doing is bypassing the factory ignition circuit and setting up a test circuit. The toggle switch will be your on/off for the ignition. With the toggle switch on, try and start the engine. If it starts, drive it that way for a few days and see if it runs normal. If it does, your problem is somewhere in the factory ignition circuit. If it doesn't, then you've got problems elsewhere.