Suzuki A100 starts without key

[KyleL1403]

Hello people I’m desperately looking for help aha, I’m restoring an old Suzuki A100 1979 it is all running fine etc but something is going wrong and I cant quite figure out what, the bike doesn’t need the key to start as long as the battery is connected it just fires straight up with the key in or out And the key doesn’t shut the bike off you turn it off the bike still runs. No dash lights come up the neutral light etc doesn’t show even though there is power going to the ignition and the bulb as i have tested it yet when you put a bulb in it doesn’t light up I have taken the neutral switch off and that is all set correctly and it still doesn’t show., I have taken the ignition out and cleaned up inside and I must say it was very dirty, that said I cleaned it put it back in the bike and it still doesn’t work yet it seems fine and clicks into position etc, could this be a faulty ignition or wire or something I have tried all sorts and cannot seem to fix it. Thank you very much hope to talk soon.
____________________
Kyle

[Nobby the Bastard]

Have you checked that the 8ignition switch is actually connected to the bike?

On older bikes then lighting side is separate to the ignition is and the ignition side cuts the engine by shorting the low tension side.
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050

[KyleL1403]

[Nobby the Bastard]

Have you checked the bulb is good?
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050

[KyleL1403]

[Nobby the Bastard]

In that case you need to check the ignition switch is working as it should. Usually the wiring diagram for the bike will show which wires connect for each position of the key.

Start there.
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050

[KyleL1403]

[bugeye_bob]

[KyleL1403]

You can easily test the ign switch with it unplugged from the loom and using a multi-meter set on continuity.[/quote]

Ah okay mate thank you so how would I go about doing that what should come up on the multimeter? All I’ve done was used a probe device to see if there was power going to it which there is to both the ignition and Dash lights yet nothing is working aha, thanks mate
____________________
Kyle

[Pete.]

As Nobby said the ignition is killed by shorting the black/white wire to earth (or the frame). If you un-plugged the ignition switch completely the engine would start and run and you would have no ancilliaries, just like you say.

Since you say that you have power at the bulb holder but no light from a working bulb that suggests that the battery negative or loom earth is not connected. Look around the frame for a ring connector with the wire broken off, or just not connected.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Nobby the Bastard]

[Pete.]

Un-plug the black/white wire from the switch harness and start the engine. Touch that wire on the engine, it should stop. If it does, touch it on the frame. If it stops the engine again your switch is faulty, if not you have a loom earth fault.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[KyleL1403]

[Nobby the Bastard]

Ffs.just strip the ends of a length of wire and stick one end in the back of the connector block.
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050

[Pete.]

OK I steered you wrong a little. The ingition wire is a black wire, not black and white. Black and white is the loom earth.
If you look at the attached snip you'll se that the black wire comes from the magneto directly to the coil. You'll also see that it has a double-connector which branches off the black wire to the switch. Earthing this wire is what makes the engine stop.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[KyleL1403]

[KyleL1403]

[KyleL1403]

[Nobby the Bastard]

First off, that bit of clear plastic tubing is supposed to be over the bare metal on the red wire.
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050

[KyleL1403]