I am installing my deluxe heater in my 47 3600. When i got the truck there were no defroster hoses left, rotted away. Just the spiral wire was left there. When routing the left defroster hose past the cowling duct in the center, if front or behind the center duct? My center duct is not installed yet, it will be painted with the cab eventually. I had no reference when I removed the heater.
