After reading about the fuse fix in DC converter to possibly fix a dead heater and needing to replace headlight too I tried the fuse repair. I had little time and ran into delays so this took longer than anticipated and I now have a dead car. Ideas? Day 1: Opened door and put windows down. Left door open. Disconnected 12V DC battery lead and first responder loop. Changed headlight bulb Day 2: Removed DCDC converter, found bad fuse, replaced it, resealed and replaced unit. Day 3 put everything back together and reconnected only to find that the car was completely dead. I measure 12V battery and it shows full but the car won't power up or even open charge port. I noticed that the door lights were ON at Day 2 and thought that was odd with the 12VDC disconnected and first responder loop removed but Day 3 they were out when I was putting things back together. Any thoughts to get back up?