Heater AC Blower Motor Question

[CarZombie 25]

The blower motor on my 1970 Mustang, factory air, will not go to High. I am assuming this mean the blower motor switch (the switch controlled by the AC Heater control pannel) needs to be replaced. BUT, just in case it really means the blower motor resistor is bad, I thought I would check. Thanks in advance.

[CarZombie 25]

The blower motor on my 1970 Mustang, factory air, will not go to High. I am assuming this mean the blower motor switch (the switch controlled by the AC Heater control pannel) needs to be replaced. BUT, just in case it really means the blower motor resistor is bad, I thought I would check. Thanks in advance.

[Cruzzar 22]

Get a volt meter and hook it to the high speed terminal and a ground and turn on the high speed. If no voltage, it is the switch. If it does have voltage, check for continuity between the main ground and the high speed terminal. If no continuity then is probably is a burnt out high speed resistor wire inside the blower housing.

[Cruzzar 22]

Get a volt meter and hook it to the high speed terminal and a ground and turn on the high speed. If no voltage, it is the switch. If it does have voltage, check for continuity between the main ground and the high speed terminal. If no continuity then is probably is a burnt out high speed resistor wire inside the blower housing.