Hello. I've already posted this once but still haven't figured it out yet so here it goes again...

I have a 1987 Mercedes 560sl. The boot that connects to the back of the air recirculation switch popped off. It has two red hoses connected to it. They came off as well. One is solid red and the other is red with a blue line on it.

There are 3 slots on the boot that these lines go into and then the boot slides on the back of the air rec. switch. A couple of questions...

1) I have only two hoses, is there a 3rd? If there is I don't see it

2) Which hose goes where? The 3 openings are labeled A, B and C. See the pictures.

Thanks

Eric

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if there is 3 spots for vacum lines and only 2 hoses,then maybe 1 vacum line fell down behind things search for it,then install them,keep switching them around till you get the recirculation to work correct,or go to mercedes have them pull up diagrahm,then you can see what color goes to what terminal.