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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Electrical - Battery, Charg Sys, Lights, Switches, Sensors & Guages » Check Fuses buell 2008 xb12 « Previous Next »

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Nameso
Posted on Sunday, September 16, 2018 - 12:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

How do I check if these fuses are good or bad?{

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Akbuell
Posted on Sunday, September 16, 2018 - 02:37 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Those are relays - basically electrically powered on/off switches. If one fails, some system won't work. The top of the fuse box cover has a 'map' of which relay is which. Per your picture, top left is key switch, top right is ignition, bottom left is auxiliary, and bottom right is start. If a system isn't working, swap the relays around, they are identical.


Hope this helps, Dave
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Nameso
Posted on Sunday, September 16, 2018 - 05:08 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thank You! my bike won’t start I just change ignition fuse now my bike has lights but still won’t start, I pulled the relays and switch them but no luck, do they have a certain look at the connections?
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Akbuell
Posted on Monday, September 17, 2018 - 03:04 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I would start at the beginning. Battery good? Battery connections clean and tight? Both ends? Then start - Is power getting to the ign switch? Is the switch good? And so on.

If the fuse had blown, Why? Shorts in the main harness between the forks and frame?

Just take your time and work carefully.
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Akbuell
Posted on Tuesday, September 18, 2018 - 11:04 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

And you say the bike won't start. To help diagnose the issue, exactly happens from turning the key on and going through the start process.


BTW, if you turn the ign on and the stop run switch to run, and then wiggle the harness connectors to the ECM, does anything change?
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