I have blown the fuse for my horn/taillights. It is the #5 fuse in the panel. There is only a 5 amp fuse when I bought the truck. I am thinking there should be a 20 amp fuse, but don't have a owners manual to tell me. Can anyone tell me what size fuse I should have? Is there a site I can go to and check the other fuses to make sure they are the correct size? Thanks.