Tother day me and Sambo, my partner in vw crime, replaced the blower motor in the golf as it had been acting a fool on high setting. As we got it out we also looked at the resistor pack, OH EM GEE was that thing rusty! Every exposed bit of metal on it, including the thermistor or whatever the little cylindrical thingy at the one end of the pack is was looking like is sat in salt water for ages, there was even a rust colored water level line on the plastic case. New pack ordered. Gentlemen, check your resistor packs! The bad blower was a valeo or similar brand they put in Brazillian vws by the bazillions as was the encrusted resistor pack, the replacement blower was a German made one nicked from a bug. Oddly enough, with the old rusted resistor pack reinstalled the replacement blower for some reason only works in 2nd and 4th gear, 1st and 3rd are inop.