Hot on one side,Cold on the other????

[Airborne01]

I just bought this car a few weeks ago, and while the people who owned it took good care of it, they wanted to change a few things around. I don't know anything about the history of how things were done, so this is totally guesswork.

The drivers side 2 vents will only blow hot air, the Passenger side 2 vents will only blow cold.

Before I realized that the pass. side will only blow cold I thought it was maybe a stuck vent, but now I am thinking that it is an electical problem.

The original stereo was replaced by a Pioneer unit that I have come to respect, but I am wondering if maybe whoever installed it might have screwed up re-connecting some wiring.

Is there a post anywhere that runs through how to remove and diagnose your control panel? (checking resistance values for the potentiometers and such) before I go tearing further into the dash?

Thanks

1990 735i

[shogun]

Get a Bentley Repair Manual for the E32. In addition see my website below and these links
http://www.bimmerboard.com/forums/posts/426626/
http://www.bimmerboard.com/forums/posts/544291/
http://www.bimmerboard.com/forums/posts/535779/
http://www.bimmerboard.com/forums/posts/537124/
http://www.bimmerboard.com/forums/posts/510685/
http://www.bimmerboard.com/forums/posts/510897/
http://www.bimmerboard.com/forums/posts/485913/

checking heater valves
http://www.bimmerboard.com/forums/posts/380566/

[Airborne01]

Wow Shogun, I knew there was a reason I posted this here, TYVM !!!