Hi there , your resistor is inside the heater box , when you get it out check the wiring that goes into it as there is a upgrade wiring loom for these cars about £40 the wiring overheats and burns the terminals off of the resistor , not a easy job to replace but it you just change the resistor and the loom is indeed burnt it will burn out the new one , loom goes into existing wiring harness to heater resistor to clock to flap control then heater controls , hope this helps you out