True to form, my BIMMER has HVAC problems... Have traced a vacuum leak to a blue vacuum hose attached to a relay not related to the set of 5 or 6 in the center of the dash, located close to the fire wall and to the left of the glove compartment. Can't tell where the hose goes as it disappears up into the dash. I assume that the HVAC vacuum hoses are color coded for function since none of them in a common area are the same color. Would like to have a diagram with color codes so I can determine which vacuum motor needs replacing and if it is worth all the trouble to fix. I have clamped the hose off stopping the leak and the system works normally, as far as I can tell. Anyone have that kind of info available?? Thanks in advance

Russ,
I have a super HVAC diagram that someone sent me a year ago when I had my problems. It shows the complete layout and line routing in color. The guy who did this had it all together. I can't lay my hands on it right now, I put it somewhere in case I needed it,but when I get offline I'll find it and shoot it to you direct. Give me an hour or so.
Talk to you later,

Tom M in PA
(ps. Yes I'll keep it handy for any other board members that may want it. Email me direct.)