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Old 03-20-2011, 10:50 AM
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anderkart anderkart is offline
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Tach INP. goes to engines kill switch wire. (or possibly negative post of external type coil if equipped )

+ goes to positive side of 12-volt battery through any type of on/off switch.

- goes to battery ground.

Your brown wire appears to be attached to a light bulb socket for night time illumination. (that socket should easily pry out to change the bulb) So you could connect it to your light switch if you have one, or just hook it up to your on/off switch if you ride at night. Or you dont have to hook it up at all.