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Dash/lights/starter won't turn on, battery seems fine.

  • Thread starter Thread starter BBoh21
  • Start date Start date
Are you connecting direct to the battery before you turn the key on? Do that. Measure the voltage . Should be 12.5V or above.
The next step is to turn on the Key without cranking (this should give about a 7 amp load with the headlamp on)... What happens. Report the results.

See Quick Test in my signature.

Voltage before I turn the key on was at ~12.2V this morning. Last night it was around 12.4V, so I probably drained it a little messing around with it. With the headlamp on this morning read 11.8V. I just charged my battery a couple nights ago. Looking at your charging system post that starting voltage seems low, but the drop after turning the head lamp on seems to be the .5V that's expected.
 
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The meter reads at mV when it bounces around in the 50-100, not V. Didn't notice that the first time and had to go back out and check after reading your reply. So when I turn the key on nothing happens until I attach the meter, then then dial lights go on and it goes up to 12.5 V, then as soon as I try to start it it shuts back off and goes down to 50-100 mV. If I hold the meter on the battery it'll eventually go up to 12.5 V again and the dial lights come back on; if i don't, it'll stay shut off. Just rechecked the fuses and they're all still fine. I'm not sure where to go from here.

Where were you probing when the lights went back on. You have a loose or corroded connection and probing it completed the circuit. I'd disconnect the battery and make sure the connections are clean and tight. If you were probing else where when this happened then specify where.
 
Where were you probing when the lights went back on. You have a loose or corroded connection and probing it completed the circuit. I'd disconnect the battery and make sure the connections are clean and tight. If you were probing else where when this happened then specify where.

I was probing right on top of the terminal bolts. When I get home I'll check and clean the connections. I've never cleaned electrical connections before, I'm gonna pick up a wire brush and some electrical cleaner on the way home. Anything else I need?
 
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That should work to get you going. While inspecting the cables that connect to the terminals, look for any loose crimps or frayed wire connections. It may also be possible that you have a defective battery terminal with a bad internal connection. Pressing down on the terminal can be giving you continuity until the higher loads of the starter breaks them open again. If you have another battery laying around I'd try that. You could even use an automotive battery with jumper cables to verify the bad battery theory.

While you're checking things, you might want to give the ground and positive battery connections a wiggle to see if that brings power back. That would verify a bad connection to the battery.
 
Looks like it was as simple as a bad battery connection to the positive terminal. Wiggling it brought power back. Unhooked all the connections, cleaned them, then put them back on tight. Bike fired up like a charm :) Thanks so much for all the help everyone, I've learned so much over the past month or so I've been on here. I'm just glad it was a simple oversight issue from a beginner rather than something worse.
 
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