C9ZZ-18578-A mounts to the rear of the factory installed heater control ventilation control pane. Good working switch and wiring pigtail with plug. Save your knob or consider purchasing the 1969-73 selector button kit. LINK
This icon means that we're looking to buy this part! WCCC is a buyer of used and NOS hard to find 67-73 Mercury Cougar parts. Usually we give an in store credit of 50% of our web price for parts delivered in hand or by carrier to our Brooks, Oregon location. If you're not interested in store credit, just shoot us an email and we will let you know if it's is something we can pay cash for. We do not send cash for parts in advance but we often can compensate you within hours of receiving the goods. Sometimes a 50% wholesale bid will not be enough to entice you to sell. It never hurts to ask if we can up our bid! If it is an in demand item that we have requests for we often can pay more. Just email us if you have questions or want to share pictures.