I when trying to figure out why my passenger seat heater doesn't work i noticed there is a blue plug with nothing connected to it.. did my 1989 735i not come with a seat heater on the passenger side??? also when comparing it to the drivers seat i noticed that the passenger seat didn't have a large box under the seat like the drivers did. Also i noticed two cables that were loose and freely floating around under my passenger's seat. i see the way they are hooked up under the drivers seat, but my passengers seat seems to work fine besides the heating part.... any suggestions on what to do with these two loose cables one is in the front and one in the back, but both on the right side of the seat thanks david