2008 headlights malfunctioning

are you the original owner of the vehicle if not hopefully you have a owner's manual if you do search for the fuse diagram of the car it will show you a small map of the fuse box the one under the hood and the one in the dash near either the driver side or passenger side some cars have one on the passenger side under the dash in the dash somehow like my wife's Chevy Venture it has one on driver side passenger side and under the hood my 02 Lancer has one under the the steering wheel side of it there is a tray that folds out from the dash if you pull it out there is a fuse box behind it make sure that all of the fuses are correct using the owner's manual which tells you in proper order the fuses should be from the amps and it tells you what each fuse works on the car like for example fuse 32 might work the fuel injector on the motor and something else and then it will need a 25 amp fuse end of example so with that said check fuses cuz I have had that problem with my 02 Lancer when a fuse has blown and the car lost power to its left side because of the aftermarket radio trip the fuse because of the radio fuse blew which also took out the remote fuse to the amp which blew another fuse which made me lose power to the passenger side of the car in this discovery because we are second time owners of the vehicle fuses were not where they were supposed to be and we're not at the proper amps stressed a fuse box which pop the fuses by replacing such have not had any problems out of the vehicle since then electrical wise this is a 02 Lancer and have had it for 4 years going 294,000 mil strong 5 speed so it did said make sure that the proper fuses are any fuse boxes and check your relays under the hood if you can't tell if it's a bad relay you can also buy them online