I would check the switch.  If you have a rear fan you could swap the two
switches to trouble shoot.  Else check with ohmmeter if you can figure
out the terminals.
Larry A.

Douglas L Urner wrote:
> I've got 1st and 3rd speeds on my front heater fan.  I'm guessing that
> there is a problem with the resistor.  Can anybody tell me where it
> lives?
>
> Thanks, Doug
>