your right, I don´t have a display. What I used for my suspensiondata was the following:
With my 3D printer I designed a case that contains the arduino, SD Card board and a battery to power it. Then I have 2 connection plugs for the two potentiometers. Then one pushbutton that I´ve mounted at the handlebar to start/stop the measurement. At least I have an LED on top of the case to signal If I´m recording Data or not. This setup was working great for me, so the basic structure of it should remain the same.