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Blown fuses

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Oggers:
Gents

Bike nearly complete after a modest refresh, but upon connecting up to battery, it blows fuses - the 15A. Neutral indicator lamp glows momentarily, goes out, fuse blown. Tried two more, even a 35A, still blows!

Guess I may have a short somewhere, but I am hopeless at electrics. I do have a multimeter though. Switchgear and headlamp all came apart, so all those connections in the headlamp shell and within the switchgear came apart. I did label them all though beforehand....

Any clues where to start and how to proceed would be most appreciated.

Many thanks

 

taysidedragon:
Impossible to tell without being there. Go over every connection that has been disturbed and double check that it's connected to the right wire. And check all wires to make sure nothing is trapped or damaged and causing your short.
Normally I would say get someone who knows what they're doing to have a look, but not really an option at the moment. 😕

SteveD CB500K0:
For a complete novice:

Ignition off.

Multimeter on ohms between fuse and ground. If there’s a short it will show zero or there abouts.

Unplug stuff one at a time and see if this changes. If it doesn’t, plug it back in and move on to the next.

Report back.


Sent from my iPhone using Tapatalk

Bryanj:
First question
Are you fitting the battery the correct way round i.e -ve to earth

Oggers:
Gents

Steve - done as you say - zero ohms. There is something across the other fuses though....
Bryan - battery connected correctly

Things I have done since

With ignition on

Lamp across the fuse terminals lights as brighly as it does across battery terminals - I guess it should not!
As an aside, I measured the current draw and it seems to be 0.29A as per battery with ignition on - so why does a 35A fuse blow Forgive any stupidity here!

Shorts inside swtichgear could be an issue. Tested all wires from the hadlebars to the bundle on the frame above the head. Pulled each each one off to see if lamp across the fuse dims or goes out - lamp still lit on each one.

Checked all the wires inside the shell. The seem OK, nothing touching any earth point - apart from the 2 green wires which should earth anyways each side of the shell.

Stumpted - Help please!  :(

 

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