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Repair guides and support for motorcycles manufactured by the German motor group, BMW.

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Damage if battery for a k100 connected up the wrong way

what happens if i connect up the battery up the wrong way and how do i fix it - thankyou

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firemansam987  tough one to narrow down. Usually you’d fry the rectifier in your charging circuit, the battery may get damaged and the electronics may get fried as well. Check all of your fuses and see what those show. To be more specific we would need to know what it does or does not do.

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Alternator or rectifier might be damaged.

Check fuses first… maybe you’ve been lucky.

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where are the fuses?

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