so how much will it cost to change the lightbulbs? How easy is it to do the switch? Do i have to take off the entire headlight os does it slide right in?

 

Cost....should be anywhere from about 10 bucks to 20 bucks depending on what kind of bulbs you get. Read my above post on how to change bulbs. You might be able to weasel your hand in there and change it without taking the headlight out. But if you can't get at it very well just take the headlight out, its not very hard to do once you figure it out.