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Electrical woes-no current

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toucheturtle:
Hi,

I rode my CB500 today as usual and turned the engine off with the ignition key. The headlight and indicator were on when I switched the ignition off. When I came to restart it there was no electrical power to any part of the bike.

I assumed it must have been the main fuse. On checking it I discovered it had a 30amp rather than 15amp fuse (which I have now replaced with the correct one) but it was intact.

My bike is a K2 Italian import with later type wiring housing three fuses in the fuse box, a 7amp, 5amp and 15amp fuse-all OK.

I haven't performed any recent electrical modifications and cant figure out why I don't get any electrics at all. No warning lights, horn etc. The battery is healthy and I continuity to the solenoid through to the ignition switch. I have continuity across the red/yellow and green/red wires of the solenoid. The kill switch is obviously in the RUN position

I have continuity from the starter button switch to the block connector under the seat for both wires.

With the red/yellow and green/red wires disconnected leading from the solenoid and the ignition on and the starter button depressed-there is no continuity between the two large contacts on the top of the solenoid.

Is the solenoid at fault or am I barking up the wrong tree?

Many thanks,

Andy

florence:
I have had this happen twice and both times it was the ignition switch at fault, the second time the switch was NOS.  See if you can wiggle the switch barrel about.

One time it happened going along in the dark; lights out, engine out, very scary.

In the end replaced ignition switch with one from an Austin A35 car.  Much better.

toucheturtle:
Have played with ignition switch, took it out and sprayed it with WD40, put it back and jiggled it, made no difference 

florence:
OK but really one would need to check continuity between the terminals at the back of the switch where the wires are soldered on. 

I am sure you are right and it is something else but you never know....

toucheturtle:
I appreciate the advice and I'll check the continuity tomorrow, I've got to go in to work now. Do you know which wires I should check?

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