SOHC.co.uk Forums > CB500/550
cb500 dead short
McCabe-Thiele (Ted):
Don't want to insult your skills but a few basics to check.
Normally the right hand side of the battery is the Negative terminal when fitted to the bike.
An earth lead goes from this Negative terminal to the engine.
The left side as you look at the battery is Positive and has a connection for the live side.
The battery on my 400 was fitted back to front when I bought the bike so both terminals were close to the frame. The earth lead had been attached to the rectifier mounting bolt.
My apologies in advance I do not want to offend anyone reading this post. I did wonder if any additional wires had been connected to the live side that might have been left off and caused a short circuit. My bike has an additional permanent fused cable on the live side connected to a special charging plug for my C-tek unit and to a volt meter I have fitted.
Just thinking of any possible reason why all that has changed is you have had the battery out over the winter and now it's faulting.
taysidedragon:
Have you looked for any evidence of mice chewing a wire or 2? They are notorious for nesting in bikes over winter.
RGP750:
Thanks Toko Jo I know Ash , I'll give him a call.
As for other suggestions. Yes battery is the right way around
The plug it in and one at a time theory is great if the fuse doesn't blow but as its still blowing it won't find it.
Still head scratching cheers
Oddjob:
If nothing is connected Rich except for the ignition switch (and you've tested that by isolating it) and the fuse is still blowing then it has to be a short in the loom. When I say nothing, I mean nothing at all anywhere on the bike, rear lights, points, coils etc.
In which case as Jo says, a simple test between black and green should show if it is the loom.
RGP750:
That's tomorrow's plan. I just hope it shows up.7
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version