I am having a hard time trying to replace the bulbs in 1999 ranger headlights, I 'm not sure how to gain access to the old bulbs. I can't find any screws to loosen, so I can pull the headlight assembly out far enough to get to old ones. We just bought this truck and came with no manuals. I feel stupid having to ask, but then again, I don't want to pull on something that will break off.