Coachgeo,

Yes, the black tube is a drain line running down the A pillars. As far as I can tell it is suppose to fit over the steel spout coming off the black painted sunroof (pan?). I was able to move the black tube away from and back onto the steel spouts. I'm thinking that someone years ago while cleaning the drain tubes pushed them slightly moving them off the steel enough that rusting started. At this point I think I will have to pull the drain pan and have it welded. This will require messing with the sunroof and the headliner both of which are in good shape now.

Taking the molding off, the rear view mirror(which just pulls off with a lot of effort) and the sun visors is not that hard. I recommend doing this to check for this problem if the car has been leaking at all.
I would guess that the black drain tubes must have been glued to the steel spouts a one time and the glue failed with age and heat.
I haven't alot of time right now to tackle this project so i will be tarping the car untill I can get to it.

Thanks all,

Mike

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1983 300DT 173,000miles sold
1983 300TDT 320,000miles sold
1985 735i 189,000miles sold
1986 528e 210,000 miles sold
1991 740 Volvo 250,000 miles
2002 VW Jetta TDI 32,000 miles sold
1995 E300D 137,000 miles
2004 Dodge Sprinter 26,000 miles
1986 325e BMW 94,000 miles
1986 325e BMW 148,700 miles
Mike