It'a actually inside the plastic pipe going to the central console, you can see the resistor if you take out the pollen filter, it's not so easy to change it (one torx screw from inside the pipe). The new (and hope so, improved version) that i bought had the fan connector on the opossite side, towards the engine bay, so it was a pain in the .... to install. But all the fan an ac problems were cured.