Heater Motor

The heater fan in my car has only two speeds. They are the two highest speeds. I know there is a resister pack. I went through this stuff with my parents Kia Sportage. Does anyone have any ideas on what to do? Any help will be appreciated.

i am pertty sure i had the same thing. so my dad put a toggle switch in my car making it have 3 speeds.

I found the problem. It is the resister pack. Theres two coiled wires and one of them is broke. Its too brittle to fix. They get briddle over time and break.