my 46 GMC had 2 switches for a deluxe heater with 2 separate fans, one labeled 'heat' for air to the floor, one labeled 'def' for air to the defrost tubes only [don't recall how many positions each had]
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics
