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Thread: Ultra-Lite Speedometer Calibration

  1. 10-12-2015, 08:22 PM #1
    BobsMK4
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    Ultra-Lite Speedometer Calibration

    After trying several times, I can't get my Ultra-Lite Speedometer to calibrate. I carefully followed the simple instructions, but the needle still doesn't move. The sending unit is plugged into a TKO 500 trans. I have a complete MK4 kit. I have rechecked the wiring and everything looks right according to the Ron Francis wiring diagram. Is there a ground that I missed? I have read several of the older posts regarding speedometer calibration. I guess I need a new set of eyes on my problem.
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  2. 10-13-2015, 11:07 AM #2
    BobsMK4
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    After looking at the installation instructions for the Ultra-Lite Speedometer, the sensor needs to be grounded. I found the gray wire under the dash and connected it to ground. I took it out for a test drive and followed the instructions for calibrating and it worked like a champ. All is well!
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  3. 10-13-2015, 12:53 PM #3
    rich grsc
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    Following the instructions always seems to work.
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