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Old August 10th, 2017, 09:50 AM   #17
DannoXYZ
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Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011

Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C

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MOTY - 2018, MOTM - Nov '17
Ok, here's how to test power & ground for fuel & tach:

1. with key ON, test for power at harness-side connector brown/black wire

2. with key ON, test for power at gauge-side connector brown wire

3. measure resistance between chassis-ground and harness-side connector black/yellow wire

4. measure resistance between chassis-ground and gauge-side connector black/yellow wire

unplug ECU connector

5. measure resistance between ECU-connector black wire and harness-side connector black wire

6. measure resistance between ECU-connector black wire and guage-side connector black wire

7. measure resistance between ECU-connector black wire and chassis-ground
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