Yeah if you remove the plastic grating you can see the door opening from the outside. But the door swings up from the inside to close. That's why I pulled the glove box to get to it. I may be revisiting this in the near future. My system had been converted by the PO so I had it reworked. It blows cold but man on those 90/90 days here in NC it gets rough. With the door wedged closed it seems to work better.
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If it ain't broke take it apart and find out why.
1983 300SD, 4 speed
1994 C280
1987 300TD wagon
1996 HD Road King
Ride in Peace Eric Peterson, Harley of Macon