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Have a 1999 150 V MAX PX150TLRX I finally figured out why my fuel gauge wasn't working ,had a bad ground to the sending unit repaired that now my speedo doen't work I have the pink wire from the sending unit going to white but theres two black wires one with a s on it and one says nothing it looked like the black comming from the sending unit was hooked to the plain black i just ran a direct ground from the battery to the sending unit when u dissconnect the plain black on the gauge the voltage will drop to 7.5v hook it back up and it will read 12.8. Is the black with an s on it the speedo wire and what does it hook to? i'm sure i pulled something off when i was under there. Does anybody have a schematic or know what the color code wires are . These are the digital gauges. Thank u in advance.
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