Join Date: May 2015
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Speedometer and digital display not working
New rider here with a question. Just got a 2006 C50 and its been riding great, the only issue is that the speedo and the digital display (fuel gauge, clock, odometer, trips) aren't working. The backlighting, neutral, highbeam, and signal lights on the unit all work fine. The speedo sensor on the front wheel is brand new. Supposedly when you start the bike the speedo needle is supposed to cycle and the N, F, and Temp lights should come on for ~3 seconds. This also doesnt happen.
My buddy (lots more experience than me) and I took the gauge cluster off the bike and opened up the unit (after checking the new and old sensor cables (by spinning them manually) and cleaning (electronic contact cleaner) and checking all of the wiring connection. We checked the harness where the speedo connects and determined its definitely drawing strong power and the wires seem pretty snug in there.
When we opened up the gauges however, we found that the rubber seal was not sitting right (had a big kink in it right near the top of the unit), there was dirt that had settled at the bottom of the unit inside the (should have been) sealed case, and the screws holding the curcuit board on as well as the surface of the circuit board has some visible corrosion).
Is it likely the actual gauge is the issue or could it still be a wiring issue somewhere else on the bike. I found some replacements on ebay but since you can't return electronic parts I was waiting until i was more confident that this is the issue.