Ecu and ballast resistor questions

Aftermarket harness?

Here's the thing........it's the original OEM Mopar IGNITION SWITCH which causes this. All these switches have two IGN posts. One is the "run" but is only hot in "run." It goes dead in start. The IGN2 (brown bypass) is hot in start. It is a separate poste and contact from the yellow "start" circuit. If your harness does include the IGN2 wire, you need to tie the two tgether at the switch itself