Ive just got my hand on a mk2 8valve on J plate its a bit ruff but it will make a fine project car and for ?500 notes whos complaining. Anyway 1 of the many niggly little jobs that need sortin on it is the heater fan, its as dead as disco! Ive had the trusty test lamp on it and the supply to the switch is ok and so is the supply to the fan unit. now is there something im missing before i go out and spend some of my hard earned on a new unit?