While I can't help you with the technical advice you're needing, I do have two suggestions on how you can perhaps get the attention of someone who has the knowledge you're looking for:
1. Use a more clear title. Instead of the year of your vehicle, use a descriptive phrase like "Ignition won't turn over after heater core replacement" or something along those lines.
2. You posted it in the wrong forum. This forum is more for discussing opinions (like mod opinions), and so a lot of the peeps who hang out here are tinkerers like me who don't have he tech knowledge you need. Instead, there is a "TJ Tech Forum" where tech-heads like to hang out, and I think you'd be more likely to get a response from posting there: TJ Tech Forum - Jeep Wrangler Forum
Good luck, and I hope you get it figured out!