This is the kit you want. The guage panel features a 3-Position paddle.
Holding switch up operates the compressor. Let switch return to center when desired height.
Holding switch down releases air. The item "Rear Suspension Air Bag Towing Kit White On Board Control 1999-04 Ford F250 F350" is in sale since Wednesday, July 4, 2018.
This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Exterior\Towing & Hauling". The seller is "chassis_tech" and is located in Mesa, Arizona. This item can be shipped worldwide.