I tried to add more information but I took too long to edit my post.
The deluxe heater control looks like this:
If you have a connection for a light in the heater switch then you probably don't have a deluxe heater. There was a factory heater option that only had a pull switch. All the images I'm finding for that switch show resistors as well but I don't know if it was illuminated. There are aftermarket heaters with rotary knobs. These switches usually have resistors but not always. Does this look like your switch at all? How many wires on your blower motor?