SOHC.co.uk Forums > CB500/550

Electrical woes-no current

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Bryanj:
You need a muti meter or a bulb with leads and clips, put the neg of the meter, or one lead of the bulb, on the neg of the battery then test for power with the other lead starting at the fuse then going through the loom contact by contact, be methodical and don't jump backwards and forwards or you will end up chasing your ar*e till you dissapear in a puff of blue smake

toucheturtle:
Have just got the multi meter out, there is no 12v current out from the red/yellow or green/red wires from the solenoid. If I turn the ignition to park just the rear light and front side light come on but it wont with the ignition switched on and with the light switch on.

matthewmosse:
easy way to check the ignition system has power and the earth, stick a insulated screwdriver accross the big soilnoid terminals (bike in nueutral for this one boys and girls) (wonder why a cheap insulated screwdriver then try it - the spark will take a chunk out of it but you'll know if the starter switch and ignition system are playing ball as well as the earth (battery to frame) and battery too. I had onne battery go inside a terminal intermittently leaving the  bike dead and then comming back to life apparently randomly - took an age to figure that one out!.

toucheturtle:
I've been all over the wiring today only to discover horrible bodges here there and everywhere. I've now got 12 volts going to the 15amp fuse and the 5amp parking lamp fuse but cant get it to the 7amp headlight fuse. Have 12 volts to the red wires to the back of the ignition and seem to have continuity all along the red/green and brown/white circuits. I'm not sure if something might have blown?

When you turn the ignition to park you can hear a slight click from the solenoid but turning it to on it does nothing. Where should I test the voltage after the ignition switch?

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