When I turn on my headlights, the rear defroster dash lights come on. I don't feel heat on the window. It has been happening for over a month. Then the other day coming home from work my dash lights went out and rear right tail lights went out. I replaced the fuse for the dash lights and taillights started working, and the rear defroster dash light went off. Thought it was all good. Last night after work the rear defroster dash light came back on. Is there a different fuse? Or what should I look for?