Question about 2006 Yamaha Road Star Midnight

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Check battery Can someone help me with this problem? I will check the battery on the bike so how I do that? I mean voltage when contact key off 12.5 V or more? Voltage when contact on lights on (auto on 04)? Voltage when starting 9 V or more? I will check first the battery because last weekend I had some electrical problems. Bike won’t start.

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Quite a few people have checked this out with no replies...your english is a bit muddy. i don't think anyone is sure what you are asking. what electrical problems did you have last week? there are a few of us who had or have them. a wire connection usually goes bad and fries a major component like the rectifier.

Posted on Nov 10, 2008

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1 Answer

Why is my battery not charging on my Motorcycle

With a fully charged battery connected, read the voltage across the positve (+) and negative(-) with a digital meter. It should be about 12.0-12.4volts DC. Start the bike and again check the voltage with the engine running. The reading should be 13-13.5 volts which means your charging circuit is okay. If still reading around 12 volts the charging system is not working, but if reading higher than 13.5v you have a serious charging fault that is putting too much power to your battery and frying it.

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Replaced a battery and there's nothing when I turn the key

have you got a electric tester? if yes check if between positive (+) & negative (-) pole of the battery there is correct voltage (at least 12 VDC), if voltage is correct check the battery terminals and clean it from oxide & dust, do same thing in wire terminals. Tell me if this works or not.

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I had error code 12 today. I checked each area the manual called for but...
  • It ended up being the battery.
  • The manual makes no mention of this check, so I suggest check this first.
  • How old is your battery?
  • Check the voltage before and after since if you hit the starter button you should see significant voltage drop.
  • Moreover, put a jump on it, turn the key and hit the starter.
  • Not only did the bike crank, but the error code went away and the meter operated normally.
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Aug 15, 2011 | 2007 Yamaha V Star 1300

1 Answer

Sometimes its running about 12 volts an then it will drop to 10 then i'm stranded! its a new batterie should i ck all my grounds?

You didn't mention the year of the bike. 12V means your battery isn't charging. If you have a regulator check the voltage at the gen terminal. If it is more than 12V, the regulator is bad. If you have a bike that's equipped with an alternator, check the voltage coming out from the rectifier (DCVolts) and the voltage (AC volts) going into the rectifier. You should have more than 12V coming out and somewhere around 14VAC going into the rectifier. Good luck and safe riding.

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None starter,got spark,good battery,fuel,fuses good.

No starter?
Got a volt/ ohm meter?
Check battery for 12.6 volts or better
check voltage coming to and leaving fuses ( oh yeah you checked all that, I guess you know you have spark cause it will pop start, just no electric starter, right?)
Check voltage at starter ( if 12 volts then replace starter)
check voltage at starter solonoid on battery side if no then check clutch switch, sidestand switch, key switch. If yes then check for 12 volts on starter side when clutch pulled in, key swithc on and starter button depressed. If no then check for voltage to spade on starter solonoid coming from key switch. If yes then replace starter solonoid. If no then check key switch and safety switches.

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1 Answer

Shits fu@$ed

Have you checked the voltage on the battery? If it is lower than 10 volts it needs a recharge and it should go to 12 volts. It wouild be good to do a load test on the battery because even if it reads 12 volts, it may not have the proper current to start the bike. If the bike still just clicks, check all of your battery cable connections. If they are all good, the starter solonoid could be malfunctioning and the starter needs to be replaced. If you can start the bike, check your alternator voltage at the battery and it should be about 13.8-14.2 volts. Hope this helps.

Aug 07, 2009 | 2004 Yamaha XT 660 R

1 Answer

My zx-12 turns off after running for a while?

Sounds like your charging system is failing. You should have 12 volts on a battery when not running, and around 13.5 or so while running. Check it with a meter if you can.

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1 Answer

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check the battery voltage with a multimeter, it should read approx. 12 volts. with the meter connected to the battery turn the key to on, turn on brights, turn signal and press brake lever. if goes below 9 volts, charge the battery and try again. if still goes below 9 volts replace the battery. when you get a good battery, start the bike and check charging voltage. should be around 14.7 volts at 5k RPM. if you have low charging voltage, let me know.

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check the battery voltage and connections.check the starter solenoid.see if it has power to it on small wire going to it, when you press start button.(this is the box w/ 2 posts & 2 cables attatched to it)use a 12 volt test light to do this. check cable tightness.SHORTCUT-turn key on,place bike in neutral,take large screwdriver & make contact across both posts of should crank if everything else is ok. if you tested for power to the solenoid and it was present, but bike only starts w/ screwdriver trick-solenoid is bad.

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2 Answers

Bad battery

Don't rely on on whether the bike will start at a gas station to determine if the charging system is working. Get the multimeter out and do a proper test. Should be getting about 14.5 volts @ around 3K RPM. It's too easy of a test to to just skip. If it is charging then start looking for something else. Was the new battery properly charged to begin with? Loose battery connection? I suppose the GPS could be too much but you said that it was dying last november, so I would suspect something else. P.S. you need a properly charged battery to get an accurate reading for the charging test.

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