How do I know what bulbs fit my car?

How do I know what bulbs fit my car?

I want to get some xenon blue light bulbs for my car but I do not know what size will fit my car.

Also how do I turn fog lights on? Is that the same as high beams? Which I don't think it is, becuase i hit my highs but I've never seen my fog lights come on.

for head lights you need 9006 for low and 9005 for high and as for the high and fogs
when your high beams come on your fogs go off, that is how the NHTSA wants it i think cuz that what happens to all of our cars too, my bro truck and dad's camry.

Ok thank you very much!

I wanted a simple upgrade like getting some new lights.

Also is there a particular company I need to order them from or can I just go up to autozone and pick up a set?

You can get bulbs anywhere in any color configuration. There are many people (on this board) that are probably using Sylvania Silverstars... Otherwise, PIAA is another noted brand. I personally have had good luck with the Sylvania Silverstars and they're relatively inexpensive. If Silverstar bulbs aren't blue enough for you there are a host of other bulb manufacturers that would be happy to sell you a "xenon gas" filled halogen bulb. Just make sure you stick within the bounds of a regular wattage bulb (51-60w) as high wattage bulbs (usually 80-100w) may have detrimental effects with your electrical and/or wiring.