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Harley davidson fatboy electrical problem

Speedometer and odometer goes in and out when giving the bike throttle. Have replaced speedometer and speed sensor, lines to spark plugs and still problem not fixed. Don't know what else to check?

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  • player70 Jul 25, 2008

    Looking to buy a 99 night train. Noticed the speedometer worked when I took off, but quit working once reached somewhere around 50, needle just keeps going higher. Even when I stopped, doing 100. Told the guy, he turn the power back on, pushed the button on the side of the speedometer and the needle goes back to 0. He says it just started doing that, doesn't know why. Can you tell me what's wrong and how much money we're talking about? Thanks a lot!

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Check your brain bro. I mean your bikes brain. Its right under your ****. hmm. anyhoo the connections get funky and those after market pipes you had to have make it vibrate and then the connections don't connect. quit throwing parts at it and look at what you got. throttle input equals erratic behaviour. vibrations shouldn't affect the components you changed but they will wreak havoc on the connections inbetween

Posted on Apr 18, 2008

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