OK so going by that, there's a bridge somewhere between the ignition circuit and accessory that is shorting it out. It would explain the ACC issue and the lack of spark (the hot ballast resistor is what is causing the coil to die and drop out) Identify what has been added onto the electrical system, why it's been done and how to reverse it. The vast majority of the time when a vehicle has had an alteration to the stock system, it was due to a fault that the hack working on it couldn't pinpoint. End result is a bypass to the fault which then introduces a new fault on top of the existing one.