Well, I bottled out of any more soldering as its costed me two boards already. I thought about sending my controls upto the 300c custom shop who do a refurb for a decent price. But I came across a brand new heater control unit on an auction site which was cheaper than a second hand unit! Issue I had with it, it was from China and it was cheaper than a 2nd hand unit. In the end I chanced it and it arrived and I fitted it to the car and now all the lights work and the air direction goes to the area of the car I want it to......happy days