heres what i did so far replaced switch because one terminal was melted a little, replaced the resisiter and can here clicking of relay when turned on. I thought it was the blower motor but when i jump it the blower works fine. It was working on only high for a while know won't come on at all. Does anyone know if there is something else in line before the blower to make it come on. its a 2005 exsplorer