Pressure sensitive switch question

[richt2000]

Hi,
I am trying to add a shifter to my Logitech wheel, the one I have only allow F1 type paddle sift.
I am planning to use a 2way joystick to hack into the wheel.
So to make this question simpler is I want to replace the pressure-sensitive switch with a regular switch.
Could someone shed me some light on how a pressure-sensitive switch works? The pressure-sensitive switch has 3 wires comes out (Blue, Blue, Yellow) and my regular has two wire (yellow[ground] and blue[hot]).
I think the pressure-sensitive is analog switch?

Thanks!
Rich