I fitted the 10-bar LED indicator to my flaps using existing wiring (my Europa
was a barn find and had the panel unceremoniously removed when I bought it). I
found the wires from the existing flap servo and deduced them to be a flap
position
indicator (variable resistance with flap travel) and purchased the Ray
Allen trim position display from Aircraft Spruce (unfortunately I could not
locate
it in the UK, and as I recall it cost circa $95 delivered). I do use it although
always follow up with a quick look over my shoulder to verify!
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