Simple...
Just put it on top of a joystick..
(take the top part off the joystick and there is a hole inside the sidestick so you can put it on each other. Arround it i need to have a boot that in this case would have to be from a renault 9.. arround 1985 or so ( most difficult part to get) But i know FDS is also going to make them for the Sidestick so maybe that will be the most best option.
The wires you see will be connected to the pcb of the joystick so you can program the button and switch as well.
gr.
Frans M
www.airbus320.nl