Heater Controls

heaterfan: common fault. under the passanger footwell, look up beind the dash and you will see next to a circular black tube, usualy with a brown base, and has 4wires going to it. this is the resistor card, held it by 2screws. remove this and you will see that the circuit will have blown which causes only setting 4to work! either get a new one from scrap yard you re-solder the blown area

taken from a thread the other day
 
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