Bypassing ballast resistor

I have used a single male-male spade connector, which you can sometime find. If not, a short wire with a male on each end works. If you want to keep a factory look, you could solder a jumper wire on the back, across each resistor. The 0.5 ohm resistor is for the coil, the 5 ohm for the ECU, so use a multimeter if you can't distinguish them by colors. BTW, most replacement ECU's today don't even use the 5 ohm resistor anymore, but you don't have the Mopar ECU anyway.

The explanation by 67Dart273 is correct and detailed. You can't just access the IGN wire for your MSD box, because that wire gets power only in "run", not in "start". That is why you need the IGN2 wire (thick brown) tied in also.