blower motor fuse or relay

You can, at least there's no additional cost to try another new resistor. You can also check for voltage at the harness connector to the blower resistor, to make sure the fan speed switch is working. Make sure the grounds are good as well.

I know this is an old post, but it may help someone else? The control switch is poorly made, take off the bezel around the controls and radio, remove the temperature controls from behind the bezel, and take it apart, it just snaps together. The contacts will be burned due to the dielectric grease wearing away with use. I cleaned the contacts and applied more dielectric grease and my blower works great now.

I have a 2013 Dodge Journey and my AC or heater will turn on by its self when I’m driving any advise what could be causing this