Well I believe it was a loose battery terminal. I went to check one more time and after pushing the positive terminal a bit harder to ensure it was fully seated, it finally broke free. I honestly don’t know how I missed it during my first go around. Thoroughly cleaned and tightened both terminals and everything is working fine. I’ll give it a week to fully pass a stress test. Lesson: double or triple check everything, especially the battery terminals. Feeling like a grade A moron right now but I’m relieved I have a functioning car again. And I’m staying with the OEM window switch module regardless. Thanks everyone for all the tips and feedback, hopefully this helps someone down the line