Hi Lightspeed, the fan pushes the air forward like the original - it is only used in slow moving traffic or at a standstill so no conflict of airflows. I don't have automatic temperature controlled switching but if I leave it switched on then the airflow from forward motion will overcome the fan airflow and this gives some automatic aerodynamic compensation. Not sure about having the fan pushed round backwards while still switched on though. Would it work like a dynamo and help to recharge the battery or is that wishing for a benefit too far perhaps?
Phil
