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FJR Motorcycle Forums
Technical & Mechanical Problems
Gen II Headlight failure
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<blockquote data-quote="ionbeam" data-source="post: 901199" data-attributes="member: 277"><p>IF is still in question. I've seen a lot of troubleshooting take place because the basics weren't checked first. Testing the headlight bulbs is simple and pretty much error free. Having 12 volts on the G/B wire is conditional whereas testing the bulb itself is not. That said, Don has proven to be pretty good at diagnostics without rookie errors so I'm pretty sure the bulbs are good but... let's just be sure before burning a lot of time and effort chasing ghosts.</p><p></p><p>As Walter says, with the engine running, at the headlight power relay, there should be 12V on the Red/Yellow all the time and the Yellow/White wire should be ground. If these conditions are met there should be 12 volts on the Green/Blue wire. If the running conditions are met and there is no 12V on the Green/Blue wire the relay is most likely bad, something that can be tested and confirmed.</p></blockquote><p></p>
[QUOTE="ionbeam, post: 901199, member: 277"] IF is still in question. I've seen a lot of troubleshooting take place because the basics weren't checked first. Testing the headlight bulbs is simple and pretty much error free. Having 12 volts on the G/B wire is conditional whereas testing the bulb itself is not. That said, Don has proven to be pretty good at diagnostics without rookie errors so I'm pretty sure the bulbs are good but... let's just be sure before burning a lot of time and effort chasing ghosts. As Walter says, with the engine running, at the headlight power relay, there should be 12V on the Red/Yellow all the time and the Yellow/White wire should be ground. If these conditions are met there should be 12 volts on the Green/Blue wire. If the running conditions are met and there is no 12V on the Green/Blue wire the relay is most likely bad, something that can be tested and confirmed. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Gen II Headlight failure
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