Hi, so recently I have noticed that my stock headlights aren't really cutting it. I wanted to get different headlights. I was thinking something along the lines of LED's or Xenon headlights. Which one is better?

& do I need to buy a kit to be able to use those types of bulbs? Or how exactly does it work?

please let me know

btw I have a 2005 S40

 

There is a ton of information out there. And it's not good either with how sensitive the S40 is to changes in the electrical system.

Maybe start here: Headlight PWM details?