hi all, i want to (well i don't want to but i don't have a choice) fit an aftermarket tacho to my TDI motor code AHU from an Audi A4 1997,
now it seems that tacho's for diesels are pretty few and far between, whereas petrol tacho's are readily available, my question is...the output from the ECU that goes to the standard tacho gauge, does anyone know what type of signal this it? is it 1 pulse per revoloution? i.e could i connect this signal wire to the coil pickup sensor lead on an aftermarket tacho?
if this would be better placed in a different section then please can someone move it as appropriate, ANY advice will be much appreciated!!
thanks
adam