Question about 2008 Yamaha YZF-R1

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It appears the polarities on my original 2008 yamaha r1 battery are not correct is this common. I removed it and put it on a battery tender. The red hot wire only reaches the negative connector on battery..any suggestions I don't want to harm the computer or any other sensitive components?

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Had the same problem, the battery does not sit upright, therefore poles appear to be reversed, battery must be installed laying on side enabling you to connect the red wire to the positive. Dont connect battery to wrong poles this will blow the 50amp fuse and possible other damage

Posted on Apr 15, 2011

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If the cables fit fine before you removed it and now don't, either you are putting the wrong battery back in....or you need to turn the battery around so the terminals are close to their proper cables.
Never reverse the cable connections,

Posted on Apr 02, 2011

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Posted on Jan 02, 2017

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Not at all common but not unknown. Indeed this very same question was asked on Fixya By tom33834 on Dec 03, 2009 http://www.fixya.com/motorcycles/t3564846-yamaha_r1_07_battery_polarity_backwards
I do know of someone else that has also had exactly the same issue. In that particular case the original battery had be charged with reverse polarity when it had been charged for the very first time.
I would suggest you get a multimeter / DVM (Digital Volt Meter) and check the actual polarity of the battery - even though it is "flat" it should still have some residual voltage even if it is not the full 12 volts - with Red meter lead to Red battery lead (and black to black) check the display to see if the reading is "correct" eg 11.45 and NOT -11.45 (note the MINUS sign) If it IS correct (which is correct FOR THE BIKE) then that would be WRONG for the BATTERY markings and would definitely indicate a reverse polarity charged battery.
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