Hi all, this is my first post on this forum and I hope someone can help me. While replacing a non-Saab leaking heater valve on my 86 900 turbo, I had to remove the dash and instrument cluster. The main ventilation selector wiring - well labeled I thought - went right back on like it was before (and it worked perfectly before). Now the blower is either OFF in the off position, or high/high in all other positions. This makes me think that there is a relay in there that has failed, and it fails to HIGH speed blowing. Does anyone have any experience with this? Or a wiring diagram for this 1986 900 Turbo? I appreciate any feedback or help.