73 electronic ignition help

My 73 Plymouth duster was running great, shut it off to talk to a guy and would not start back up. No spark. It's been a few months now, I got a new ECM, ballast resistor, coil, and a new harness to tie everything together. I even tried putting on another distributor I had laying around, still nothing. I noticed that the ballast resistor gets kinda hot I don't know if that's normal or not. Anybody have any ideas? Thanks