The voice of experience?You need to recheck your wiring one of the earth wires is wrong it,s the very thin ones
Had a simler problem the wiring diagram was a little confusing if the gauges is not working then I don't think it can calibrate .I did sort mine out eventually (it was the very thin black earth wires) but it packed up after three months the diode failed .There must be people on here who fitted it first time with no problems :doh::lol: but i was not one of themThe voice of experience?