Hi Folks,
I have a 73 non tii that I've owned now for 7 years. The heat from my floor area works really well and gets nice and toasty, however no matter what I do, the windshield defroster always blows cool air even when I close off the valve. I get that the valve may be broken but why is the air always cool. Isn't the floor and defroster both fed from the same heat source? THX