I have a manual control heater AC control and I had no blower. Checked at the fan and had power so I replaced the blower motor and that gave me the blower again except for high speed.

I always thought that the high speed was a direct feed to the blower motor and bypassed the blower motor resistor. Is there a chance that there is a relay in the high speed circuit ??

Would this indicate that the switch is likely bad ??

Where is the blower motor resistor located ??

 

Little more research and yes there is a relay and I'm thinking mine is shot. Not sure where it is so if anyone has found theirs would appreciate any directions to it

 

Running across different answers. This diagram is correct and the third relay from the left, labeled blower relay is the five pin that's bad on mine. I swapped a couple of the relays (All the others four pin) around and this one gets the blower spinning but good

Not sure what the fifth wire is for but there is a wire in the connector for it so 5 pin it is.

 

If you're like me and couldn't find the resistor you need to look under that fuse/relay panel as you'll need to remove it to get to the resistor.