Quote:
Originally Posted by
mathewst
Amazing reply thanks amillion.
I do know how potentiometer basically works, i just dont get 2 wires. I tried to tap those 2 no voltage in them. (Green and black) i got dash disconnected though
If i feed 12v into green in potentiometer i would need another wire eher i can mesure output voltage, black is griund i suppose.
Red and black is voltage for fuel pump?
If i can mesure voltage i can set rest up. I programmed few arduinos, will do it that way.
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I don't think you'll get a voltage reading in either wire that goes to the sender with the dash unplugged as I think the supply to the sender comes from the dash and is earthed through the sender's potentiometer (if my memory serves me right).
You should (as you say) be able to create a new (ignition switched) 12V supply to the sender and then to earth. With the new voltmeter/gauge (or whatever you decide) sitting between the supply and the sender. Something like this...
+12V -----> gauge -----> sender -----> earth
Good luck! Keep us posted...