The resistor pack is mounted onto the blower motor which under the glove box and behind th egear linkage mounting, It is quite an easy job once the glove box is out. There are two retaining spring clips holding the motor in place remove these and the motor wiring plugs and out she comes. The resistor is held on by two 8mm bolts take these off and replace. Check the positive feed wire from the ignition this was a problem I had on my 2002 model. Hope this is of help.
Heater blower resistor is what controls the low medium high speeds...
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In general the heater blower motor speed resistor is located in close proximity to the blower motor.
The heater resistor coil is located on the blower motor on the 2006 T300 Kenworth.
the heater blower resistor is located on the passenger side footwell near the firewall. a complete how-to replace the resistor, along with photos is available on newcougar.org http://www.newcougar.org/forums/how-tos/3732-fixing-heater-blower-resistor-install-photos.html
You can replace the balls in the heater control panel on an XS ARA Picasso by removing the front cover of the heater control panel. The panel lights will then be visible.
heater blower resistor has to be replaced. you have to remove glove boxthe resistor is to the right of the heater blower moter
They generally locate the heater motor speed resistor nearby the blower motor because the resistor depends on the blower to keep it cooled.
The heater resistor on a 94 Astro is located on the top of the heater box under the hood, it has a four or five wire plug on it and two 6mm screws hold it in a hole in the heater blower box.