Electrical problem with gauge cluster? - Honda RC51 Forum : RC51 Motorcycle Forums
 
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post #1 of 3 (permalink) Old 02-29-2012, 08:33 PM Thread Starter
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Angry Electrical problem with gauge cluster?

I have been trying to tackle this gremlin for a few days now. One day, when starting my RC, the gauge cluster wouldn't come on. I was only riding some twisties in the country, so I rode it anyway. I noticed, when grabbing the front brake lever, the gauges illuminated! When released, off they go. I figured it was a short in the micro-switch mounted on the master cylinder. Replacing this did not fix the issue.

I have since then, discovered that the switch is getting constant power without being depressed, and I believe that it should only get power when squeezed.

Any insight?
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post #2 of 3 (permalink) Old 03-01-2012, 07:31 PM
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Originally Posted by jlace86 View Post
I have been trying to tackle this gremlin for a few days now. One day, when starting my RC, the gauge cluster wouldn't come on. I was only riding some twisties in the country, so I rode it anyway. I noticed, when grabbing the front brake lever, the gauges illuminated! When released, off they go. I figured it was a short in the micro-switch mounted on the master cylinder. Replacing this did not fix the issue.

I have since then, discovered that the switch is getting constant power without being depressed, and I believe that it should only get power when squeezed.

Any insight?
I'd check to see if anyone put some "aftermarket" adjustments to your wiring harness....like a ground is switched er something. Pulling in the brake and the cluster illuminates, thats an odd one there.



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post #3 of 3 (permalink) Old 03-01-2012, 08:26 PM
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That is what my cluster did when I blew my running lights fuse. Did you remember the number one rule of electrical problems "check the fuses" I usually forget that rule and check everything else first! I think when the brake lights are lit the power back feeds through the running light bulbs' filaments and feeds the cluster. Mabe? My fuse blew because one of the light bulb sockets on my tail had a loose pin, and the wire was grounding out intermittently.
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