My 2006 Prius passenger is having electrical problems

What is your question?

All of a sudden I noticed the 12v charger under dash stopped working, then passenger seatbelt stopped beeping, some of the warning lights on the dash stay off when turning on car, and abs sometimes will stay on and other times will stay off. 4 days ago for the first time in months the seatbelt started going off but it won't do it again. Also my headlights take turns going off it seems like, I've had to change them about 3 times each within the last year and now my right only comes on with high beams