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Start tracing wires. Depends on your bike and where they are but check to see if a plug came unplugged or rattled loose. Most wires & plugs are under the tank and near the neck but info on your bike would be helpful too. Could be something in your cluster as well.
If it was a power going to ground issue you would most likely blow a fuse. Since it is multiple circuits at once I would check the main 40 amp fuse. Don't just use a fuse tester. Take it out and visually inspect the fuse.
All those things are on separate circuits so fuses are probably not the issue. I would check the main wire harness connectors. They may have pulled apart. Also, don't forget to check the connector that plugs into the speedometer.
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