Cant figure out why the blower motor is suddenly not working. The ground wire is attached well, the selector switches all work for the vents and the ac compressor gets power when selected. The fuse is good for the ac/ heater. Dont think its the resistor because i read here that the fan should still come on in high position even if the resistor is bad. There is suppose to be a feed wire to power the thing somewhere but dont see any going to the housing. Where is the power wire so i can run a jumper to the battery. Also had some work done recently so maybe a wire got broken. What am i missing?