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FJR Motorcycle Forums
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AVCC install on '07 wiring questions
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<blockquote data-quote="mcatrophy" data-source="post: 1139230" data-attributes="member: 3187"><p>If the brake lights fail, the cruise control WILL DISENGAGE. No ifs, no buts.</p><p></p><p>Explanation: The CC will disengage with a very small positive voltage on the brake light circuit. Normally the brake lights' filaments hold the wire at very close to 0V. As well as sensing this voltage, the CC bleeds a small current onto this wire to check that the bulbs haven't failed. This current will lift the voltage sufficiently to disengage the CC if the filaments fail. Or if the CC's sense wire falls off. So long as it doesn't short to 0V if it does.</p><p></p><p>There are other Gen II FJR current bleeds into this wire as well, the ABS for one, and if you are fortunate enough to have an AE/AS, the YCC-S computer does, this/these will also lift the voltage on this wire.</p><p></p><p>Safe disengaging with blown bulbs is nothing to do with which 12V source you use for the CC.</p></blockquote><p></p>
[QUOTE="mcatrophy, post: 1139230, member: 3187"] If the brake lights fail, the cruise control WILL DISENGAGE. No ifs, no buts. Explanation: The CC will disengage with a very small positive voltage on the brake light circuit. Normally the brake lights' filaments hold the wire at very close to 0V. As well as sensing this voltage, the CC bleeds a small current onto this wire to check that the bulbs haven't failed. This current will lift the voltage sufficiently to disengage the CC if the filaments fail. Or if the CC's sense wire falls off. So long as it doesn't short to 0V if it does. There are other Gen II FJR current bleeds into this wire as well, the ABS for one, and if you are fortunate enough to have an AE/AS, the YCC-S computer does, this/these will also lift the voltage on this wire. Safe disengaging with blown bulbs is nothing to do with which 12V source you use for the CC. [/QUOTE]
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AVCC install on '07 wiring questions
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