@JeffTT Is the signal that enters the speedometer at (A) the same as the one that comes out at (B) and is sent back to the other components? Or is it processed by the speedometer's electronics? If I connect (A) directly to (B) without going through the electronics, does this allow the other components to function? I'm asking this because I would like to create a digital speedometer without losing options like HICAS and cruise control.