Hi cool
okay answers
1. part numbers and parts check this 2 page thread read it all....
http://www.xoutpost.com/bmw-sav-foru...-8-owners.html
2. I think that was on high all leds lit.
3. to be honest I hated math so tons of googling found people that used that thermistor on bmws.
Also i was trying to match or stay near bmw reccomended temperatures.
i dont have it on this pc but if you go to the wds site and look up rear seat heating it will show you the temps the elements are supposed to be at for stage 1 and stage 2. rear seats are dual stage. front seats are 3 stages.
hope that answers your question if not i will post the wds guide i used.
1 other thing cool remember thermistor is only needed if you have old heating elements that are 1.. only 1 stage meaning get hot or turn off.
2. only 2 wires.
Most newer elements are 3 wires and already have the themistor in them.