Vintage Air or Similar Setup

The Classic Auto Air ac system that I put in my 68 Barracuda reuses the existing non factory AC dash controls to control the Vintage Air ac. So the look of the dash control is absolutely factory OE original.
The kit included a new fan control switch that has four fan speeds, and re uses the OE dash knob and includes the pieces and directions necessary to modify the levers and controls on the oe dash ventilation control.
The vintage Air units I put in my customers cars all had a adaptation to the factory levers. I would take off the analog cables and put electrical sensors on the factory controls and then once everything set up there's a procedure to calibrate The high and low reaches of each lever...