2001 Kia Optima Lighting problems

While driving at night, the headlights would dim whenever the a/c or the heater was turned on. The dealer/manufacturer both agreed that was the normal characteristic of that vehicle. Feel free to provide any further information. *Jb

This vehicles electrical system continues to fail along with nonworking lights, air conditioner, lock failure, battery and altrenator failure. Car has been worked on for same problems more than 5 times. Car has had (that I know of) 3 batteries and 2 alternators. Once the locks on the car failed and I was trapped inside vehicle for more than an hour. Locks would automatically relock faster than you could open the door.*Ak

A/c condensation build up on the inside of car had at dealer 2 times before they fixed .#2 Replaced right headlight 4 times in1 1/2 yr no finger on bulbe! #3 After sitting over night on first start up transmission will not move at first #4 gas gauge from day 1 wouldn't read full after 3 trip to shop they fixed it