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  #1  
Old 06-10-2009, 03:21 PM
japablaz japablaz is offline
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Headlight Fuse

Hi everybody.

I got a XJ1100J during the last April, and few weeks ago I noticed that my bike had the headlight fuse wrapped with a piece of aluminum wrapping paper. I removed that paper and turn the bike on. Then I realize that the fuse (glass type) got extremely hot (I burned my fingers). I decided to remove the fuse but now I don't have the headlight working. I've been reading some post, but I must confess that I'm a total illiterate regarding to bikes (this is my first one) and electric stuffs. Some of these post suggest checking ground and charging, and I guess that is not the problem. At least, I got all the other fuses working normally. The headlight is also ok, except for this fuse thing that get hot. Anyway, I have no idea about these things.

Any suggestion?

BTW, I checked the voltage with my cheap voltmeter, and it turns out that the headlight fuse has 50V while the other three fuses have about 10V, I think. I'm sure there must be a problem hehe
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  #2  
Old 06-10-2009, 03:25 PM
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cywelchjr cywelchjr is offline
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Do a search for the thread on replacing the fuse box as it sounds like you need to do it. TC on here has a nice little box he sells for like $8 or so that works really well. The actual replacement is pretty easy if you just do it fuse by fuse, and it makes for a more modern look under the side cover where nobody ever looks

I've done this fix on both my Yamaha's and it took them from barely working electrically to pretty reliable electrics.
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  #3  
Old 06-10-2009, 03:41 PM
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bikerphil bikerphil is offline
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Fuse box mod. will save you a lot of headaches down the road. Heat is caused by resistance, which means your connectors could probably use a cleaning. Apply some di-electric grease to avoid future corrosion.
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  #4  
Old 06-10-2009, 06:37 PM
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DGXSER DGXSER is offline
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Quote:
BTW, I checked the voltage with my cheap voltmeter, and it turns out that the headlight fuse has 50V
WTF Am I the only one who sees a big problem here?? Either you need a new meter or you need to unplug your bike form the wall socket, or the other four batteries you got hooked up. 50V from a 12V power supply is pretty dang good if you ask me.
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  #5  
Old 06-10-2009, 07:17 PM
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TopCatGr58 TopCatGr58 is offline
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Hey DG,

I saw that too, and although he says his charging must be okay, it could actually be too strong, like a messed up reg/rect overcharging? He needs to check his voltage across the battery at idle and again at 2500 rpm, and it shouldn't go over 14.5 volts. IF it's much higher, then your charging system is messed up!

Do you have an owner's manual? Are you sure you're checking the headlight fuse?

Yes, more diagnostics and investigation are in order!
T.C.
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  #6  
Old 06-10-2009, 07:29 PM
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79XS11F 79XS11F is offline
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You also should NEVER bypass or enhance a fuse with any metal object unless you like putting out fires. Did you confirm the amperage of the fuse? It should be 10 amp only. More then that and you will be damaging something else and have a bigger issue in the end.

Rob
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  #7  
Old 06-10-2009, 07:49 PM
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DGXSER DGXSER is offline
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You know I had an old xs750 (78 model) that was used and abused by many a PO including me to be honest. Long story short,no pun intended, I hopped a curb once and ever since had a short to ground that would periodically short out the main fuse. I put a 10 ga wire across it, and it burned through it. I am sure that eventually I burned the harness up good somehere because it no longer would work with the direct connection.

Yeah, do not do that!
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Life is what happens while your planning everything else!

When your work speaks for itself, don't interrupt.

81 XS1100 Special - Humpty Dumpty
80 XS1100 Special - Project Resurrection


Previously owned
93 GSX600F
80 XS1100 Special - Ruby
81 XS1100 Special
81 CB750 C
80 CB750 C
78 XS750
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