1997 Ford F-150 windshield leak caused complete electrical

I am sufferring from the dreaded leaking windsheild issues many 97-01 f150 owners have been. It started a couple months back when I noticed guages, and power locks were going haywire when it would rain. In the next few weeks it really got outa hand when the truck was parked in the drivewy it would attempt to start itself. One day went to start the vehicle and could onlyget a click from the ignition. Took in the truck had starter replaced andtht did nothing. Same click. Found out that the gem module was likely the probem in the process of ordering that part I now have zero power to the truck. Battery is fine. Again no power to ANYTHING. Could this all be from a fried gem module or can this also be caused by the ignition switch. Any help would save me time nd money which I have little of both? Thnx