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Anonymous
Anonymous Posted on Jun 25, 2012
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Suggestions for finding a short circuit

Battery dies overnight. I disconnected neg terminal, and ran tester from neg lead to battery terminal, tester shows 12.6v. With ignition off, it shld show 0 right? I pulled every fuse, 1 at a time, and tester still showed 12.6v. The only fuse that affected the reading was the main breaker. I`m stumped. suggestions?

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4 Related Answers

Anonymous

  • 53 Answers
  • Posted on Mar 25, 2009

SOURCE: Have No ignition light when in Nuetral.plus wont start

russel just because you have new batt does not it is not faulty or not fully charged have it tested should read 12.7 volts if fully charged. it should not be a fuse or green light would not be on when the bic is running . check batt cables at battery and also at stater solenoid. hope this will help

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Anonymous

  • 1167 Answers
  • Posted on Aug 25, 2009

SOURCE: 1988 Yamaha FZR 750 short circuit

HI MATE THE CABLES FROM THE ALTERNATOR LEAD INTO A FUSE BOX CHECK TO MAKE SURE THIS FUSE ISNT BLOWN IF IT ISNT GET BACK TO ME

Anonymous

  • 78 Answers
  • Posted on Mar 02, 2011

SOURCE: 2001 VStar 1100. Overnight battery

sounds like the voltage regulator/rectifier is back feeding to ground discharging the battery,disconnect the wire going to battery from regulator,and then let it sit for some time,then check again,hope that works for you.

raj somaiya

  • 5370 Answers
  • Posted on Jul 14, 2011

SOURCE: Main fuse blows. Have disconnected

Check the the starter relay, it is sending power up and out of the clutch switch so engaging that creates the short, and the neutral switch runs off the same diode, making that short too. By pass the relay and see if that helps. ----------- Disconnect the reg/rec and see if the fuse blows.unplug the rectifier and see if the fuse is still blowing. ------------- The white wires from the stator coil to RR can be in any order.

I am thinking you crossed the + and - wires leading to the battery.May be any of the wire got reversed or getting ;loose. ---------------- If the main fuse only blows after the R/R is connected. I will double check the R/R, the + & - wires connection.If you cant make sure which is the + on the RR.You can test it by hooking up the 3 white wires, starting the bike, then testing the 2 leftover prongs V DC, the one with voltage coming out will be the +, leaving the other obviously the neutral. -----------

Try unplugging the rectifier, and turning on the key. If it don't blow the fuse then the rectifier may be bad. --------

Click this link below for more details:--

http://technoanswers.blogspot.com/2011/07/main-fuse-blows-on-yamaha-motorcycle.html

----------- This will help.Thanks.Helpmech.

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