Speedo cluster, backlights work but tacho & LCD do not work or are intermitant If the gauges do not power up like normal with this, then you have a problem with gauges themselves. This will light the gauges up and do a POST ,(power-on self test). This should be your wiring pinout on the gauges.in order to power them on, you need to put 12v on 1, 12v on 8, and ground on 2. green stripe (lites with gauges powered and no connection on this pin) :thumbup:ġ1= immobilizer indicator = brown/yellow stripeġ5= fuel indicator = black/lt. You can believe this or not, but it was the best $50 I've ever spent. Then when we started riding it, and again the work/not work until the battery went completely dead, so I went to Walmart and got a battery. During the process, we made sure our battery was completely charge and the bike never moved from it spot in the garage. It was an on and off again situation and it would work one day and not the next. We took the skins off and trace for pinches and cleaned all the connectors. We finally solved our issue and I am 100% convinced it was the battery. ![]() Let me know if you get another solution to this problem, thanks. It's great that you have parts to switch to determine the issue, but I'd recommend swapping the battery and making sure it's completely charged. Something must reset the cluster functionality, all indications to us is the power coming from the battery. I told my son, lets leave the 2 amp trickle on overnight, the next day it started working again on both clusters. We also needed to get the battery completely changed in order to get the cluster to work again, jumping did not correct the problem. ![]() ![]() We think that might have had something to do with the issue. Our 750 has a security system that runs off the battery which we have disconnected. We do believe something resets the tach/speedometer function on the ECU, were just not sure what that is? We hadn't experienced any starting or performance issues. We were also apprehensive changing the ECU, since the only issue was the cluster. Our used replacement part cost only $100, I suppose that was a small price to pay considering a dealer would have charged for a new cluster and service.Īfter cleaning the contacts with a electronic contact cleaner and inspecting the wiring and contacts for bent pins, this seemed like the wiring harness was the least likely replacement part. Since the Cluster's tach and speedometer weren't working, it seemed like the logical part to replace, but as we found out, not so. Brainstorming again, the components that seem to be in play here are the Cluster, wiring harness, ECU, and the battery.
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