As I was installing my glove bax back into the dash I happened to brush up against the black thermal insulation foam that was installed on a black rubber hose behind the glove box. The black foam was crumbling and when I reached up and squeezed it, I found that there wasn't even any hose inside of it. The foam was between twon ends of a rubber hose and made it appear that the hose was one continuous hose. The hose is about 3/4" OD and 1'2" ID. When I started the car I thought that maybe it had something to do with the A/C so when I turned on the A/C it seemed that there was a slight vacuum to one end of the hose. And I mean, VERY SLIGHT. Does anyone know what this hose if for? Should I hook it up?
84 500SEL EURO 87K
85 300D 267K (and still goin' strong)