Hopping on the thread... I fitted mine too and it works very well indeed. Just to make a show of it, the other morning after finishing a nightshift, I took my coat off before getting in the car to the amusement of the lads I work with. For the summer and winter option, I just fitted a switch inline with the signal to the fbh. If I turn it off, the blowers come on, but the heater does not. It should give fresh air in summer.
One little question i've been meaning to ask. How can I increase the remote box aerial length so I can achieve a response from the remote at a longer distance, is it just a case of adding more wire and locating it in a more prominent position?