First, a bit of a back story. I pull my key out, jeep dies (as it should), I open my door (drivers' side, as it will be), and the key-in-ignition door chime goes off. It doesn't shut up for anything. Very annoying. So while replacing the heater core (an EASY TASK, fit for any DO-IT-YOURSELFER with a LARGE GARAGE and a PhD in MECHANICAL ENGINEERING), I decided to fix this too. As there are no write-ups for fixing it, here is my feeble attempt.