You may be able to download an owner's manual for your 2000 Mitsubishi Galant at the following link: https://www.mitsubishicars.com/owners/login
The Mitsubishi Galant has two fuse boxes: one is under the hood, next to left/right fender or near firewall. The other is inside the car, in the dash near the driver side's left panel or in the under the front passenger footwell.
You can find additional guidance on how to access your fuse panel here: http://www.carcarekiosk.com/video/2002_Mitsubishi_Galant_ES_2.4L_4_Cyl./fuse_interior/replace
If the manual is not available from the owner's site, and you need assistance deciphering the fuses, you may be able to find a fuse diagram at this link: https://manuals.co/workshop/mitsubishi/galant/mitsubishi-galant-2000-workshop-manual-v6-3.0l/5576749 Unfortunately, this site requires a small fee to download the entire manual, or you must search page by page through the book to find what you are looking for.
For additional assistance, please find an AskPatty Certified Repair Shop at http://www.askpatty.com/search/?type=all&m=30&q=&keyword= and they can help you diagnose and repair the problem.