Originally Posted by
RichieST
The resistor is just for the fan speed, it doesn't control temperature. I would say it is probably a wiring problem, I guess these work on a stepper motor type setup, so I would be checking for change in voltage output at the plug when you turn the dial.
thanks ,I forgot to say that I have had a meter on the plug contacts
Across the pins of plug measured 0v
live to battery measured 13v ish
the pulsing one measured between 0-0.3v depending where the temp dial was. (to battery)