similar issue is heater resistor must be faulty , as speed controller only works on position 4 , not 1 2 or 3 ,
remove the blower motor , locate resixtor unit , use a hand held magnifier to identify any burnt area and resistor type , then disconnect wires from connector points on resistor pack, replace resistor with higher rating , by de soldering the resistor from the pack or box or unit , and then reconnect wires to original locations which you listed in Colors one at a time before you remove them wires from the black connector connectors , think the part as a diagram in electrics from service manual , is IP59 on circuit diagram number 74.01, as for part number hmm seems to be a reluctance for those to be found, oddly , some one said ford focus, the engine is ITALIAN V M Moturi , 2.5 common rail diesel 2499cc , so what we need is a compatible electrical components list of switches units, connectors, fuses, resistors , Jeep engine vehicles may be possible for electric parts resistors heater blower resistors ,
Lugbold gruddock
July 2025