sounds like its shorting out when a load is put on your electrical system. I'd start checking fuses, grounds, and other junk also..make sure you have the CORRECT fuses in their proper spots. I know it's not a very systematic answer, and someone else will eventually chime in and give you a more direct answer.
Keep an eye out for any traces of water near the fuse box in the drivers side, and also the PCM on the passenger side engine bay.
Good luck, and welcome .