Deve,
If you are interested in what goes where on the 53-55 "deluxe" heater, here are general locations:
1953-1955st Fresh-Air “deluxe” heater’s decal for inside/outside air
- middle right decal on the decal sheet
- goes on the plate for the inside/outside-air control knob/cable mounted under the dash to the left of the steering column
1953-1955st Fresh-Air “deluxe” heater’s DEFROSTER decal
- bottom decal on the decal sheet
- goes on the heater-body, under the post on the defrost flap
By the way, using the word "Harrison" to describe the heater might confuse some some readers. I do not think that GM used the word "Harrison" in sales brochures, or parts/accessory lists. All GM heaters were made GMs' Harrison division. It might be clearer to refer to a heater by the year/years and by the name "recirculating" or "deluxe"?
