My first proper electrical fault!

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My first proper electrical fault!

Postby Geezer » Mon Sep 02, 2013 3:57 pm

Well after all this time, I've finally got an electrical fault (I don't class the dodgy indicator switch as a fault, just shoddy workmanship).

My head lamp has stopped working and my indicators have gone to flashing really slow.

Voltage at headlamp end: 1V!!!
Voltage straight out of stator at the connection inside the black junction box: 20V

Hoping I just need to replace the regulator as I have a couple spares somewhere.
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Re: My first proper electrical fault!

Postby mikey 69 » Mon Sep 02, 2013 6:55 pm

good luck
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Re: My first proper electrical fault!

Postby Laurie » Mon Sep 02, 2013 7:09 pm

Yep.

Sounds like the regulateor.

Ducati ones for our scoots are good mate.

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Re: My first proper electrical fault!

Postby Geezer » Tue Sep 03, 2013 3:42 pm

Nope, wasn't the regulator. Never the easy option is it. Time to fault find.
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Re: My first proper electrical fault!

Postby Laurie » Tue Sep 03, 2013 7:29 pm

Hows the battery looking?

This is a fuzzy this one!

Keep us posted Gezzer'man.

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Re: My first proper electrical fault!

Postby tipper » Tue Sep 03, 2013 7:48 pm

Battery doesn't affect the indicators and headlight does it ?

Thought the electric start and horn were the only things on the DC circuit.
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Re: My first proper electrical fault!

Postby Robby » Tue Sep 03, 2013 10:44 pm

If it is wired like they are over here, the battery DOES power the signals and the position lamp in the headlamp housing.
The brake light is also battery........each of these operate with the key on but not running.

The taillamp and position lamp switch to AC on startup.

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Re: My first proper electrical fault!

Postby Geezer » Wed Sep 04, 2013 6:21 am

No Robby, they aren't wired like that here. The head lamp and indicators are AC.

It's looking like my supply cable must be fried and gone high resistance, not found where yet but it's looking like it might be quicker just to throw a new wire through the frame.
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Re: My first proper electrical fault!

Postby deekay » Wed Sep 04, 2013 6:35 am

Before you do that connect negative lead of meter to battery negative terminal, straight on and positive to the circuit you suspect is faulty, if it is ac the meter must be on ac, if dc make sure meter is reading dc, could save some time. Earth faults are notorious on bikes.
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Re: My first proper electrical fault!

Postby Laurie » Wed Sep 04, 2013 8:28 am

I had a battery leak on mine about 5 years ago.

Guess what happened?

Power cables melted and toasted the headlights and indicators.

Not all that glistens.......
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Re: My first proper electrical fault!

Postby Tony » Wed Sep 04, 2013 9:18 am

I had to replace one wire from regulator and one from CDI so far...........left other wires in frame just threaded a new one in...good luck finding the feker
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Re: My first proper electrical fault!

Postby Geezer » Thu Sep 05, 2013 6:20 am

Found it! A chafed cable on the switch loom.
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Re: My first proper electrical fault!

Postby NICK » Thu Sep 05, 2013 6:23 am

Chafing................ouch......................
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Re: My first proper electrical fault!

Postby marty r » Thu Sep 05, 2013 10:51 am

Whereabouts on the loom was it?

Poor cables themselves seem to be a recurring fault on these machines.

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Re: My first proper electrical fault!

Postby Geezer » Thu Sep 05, 2013 11:02 am

The yellow cable (that's in the same plug as the grey one), was where it feeds through into the headset from the horncast. It was taped up so looks like the previous owner has already found a fault and taped it, then the tape wore through. It's now replaced and 2 layers of heatshring, then coated in silicone grease before feeding it back through. Hoping the grease will allow it to move more and not wear through again.

Still don't know why my indicators went slow, perhaps it was affecting their earthing, but they're fine again now.

I also found the wires for my indicator buzzer taped off and tucked in behind. I previously assumed they'd been cut out. Anyway I've reconnected it as I'm always leaving them on and others have to tell me to cancel them.
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Re: My first proper electrical fault!

Postby deekay » Thu Sep 05, 2013 8:59 pm

Geezer, did you use resin heat shrink, I think its the more flexible of the 2?
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Re: My first proper electrical fault!

Postby Laurie » Fri Sep 06, 2013 12:30 pm

Great work Geez!

Thats a wrap!

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