None of my fan speeds are working in my truck. i replaced my fan blower resistor and harness a while back because my 1-3 fan speeds didnt work only my 4. But know none work. I was driving and had my fan set on 3, i touch it to turn it down and my fan shut off. so i checked my fuses and they where fine, i checked my fan motor and it was getting power. i went ahead and changed the resistor again and the harness but that didn't work. any ideas?