SOHC.co.uk Forums > CB350/400

Short circuit, anyone?

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FrasMac:
Hi,

Well, replaced my fusebox with one off ebay, half the price of DS, and in very good condition. Went for a run and broke down, pushed home a mile and a half, got the old continuity tester out, and the main fuse had popped.
So, now I'm thinking short somewhere.
Is there anywhere that is vulnerable to shorting that would take out the main fuse, or is it just a case of trying every connector and wire until I find it?
Or might there be another reason that the old fusebox fried, and the new fuse popped?

Cheers!

mike the bike:
It must me an intermittent short, otherwise it would have blown straightaway.   Check where the loom passes through places like the handlebars, on the sprocket cover, the points cover etc.....
Try running the engine on the stand and waggling the loom around to reproduce the fault.

Next time you go for a ride, take spare fuses.

Bryanj:
did the fuse pop in the middle (high current) or at the end(vibration/heat) if at the end polish the contacts in the box and make sure they are tight on the fuse end as dirt and loose makes for heat which causes melted box and fuse end

exvalvesetdabbler:
Also check the bunch in the headlight shell for anything touching the rim or grounded parts, this is where I had an issue in the past.

If you know which fuse is blowing it should help narrow things down a bit.

Dave

mike the bike:
It was the main fuse Dave;  thatwhy he ended up pushing it home.

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