If you have the owners manual there will be a diagram of the fuse box there. If not, take a look at your fuses and see if you can see one that has blown, sometimes this isn't easy. The best way would be to purchase a 'fuse tester' at your local auto parts store. There are some fuse packages that not only come with a varity of fuses, but also a free fuse tester. There will be instructions with the tester, and they are quite inexpensive.