I have a 1986 300E and the ac/heating fan does not come on. I have checked the fuse and it was good. I then pulled apart the blower housing turned the fan on and checked for voltage going to the fan. There was not any voltage so I ran a jumper from the battery to the fan motor and the fan ran. So, now I believe that the control panel in the car is bad. Now my question Have I over looked anything and is there any way to check the panel out? any help would be greatly appreciated