Hi.... I need some help locating my heater's blower motor resistor. A book I'm using isn't descriptive enough. I only have high speed on my blower motor. I checked the voltage going to the blower motor working the blower switch inside the cab. It seems good. I'm getting 11.77 volts on high speed and then 10.51, and 5.9 . My book says to check resistance on the resistor and do an ohm to ground check. Since I have a varying voltage going to the blower motor and it only operates on high speed, can it be that the blower motor is faulty and won't work at the lower voltages. I really don't know where to go from here. Help

Jimmy B

 

try using the search button at the top of the pane . Blower motor questions come in here 2-3 times a week and have already been answered .
BTW the resistor is below and to the right of the blower.