OK, I'm installing my heater and I've tried hooking up the defroster hoses but I can't get the drivers side hose to go on because it has a rubber sleeve on it...at least it was rubber 60 years ago. I've got a parts truck and it's the same...it has a sleeve on the drivers side but not on the passenger side. Does anyone know why the drivers side defroster has the rubber sleeve but the passenger side does not? Is this just a leftover from an old hose assembly?
