Author Topic: C11 ignition switch  (Read 596 times)

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Offline intrudin

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C11 ignition switch
« on: August 24, 2020, 02:14:07 am »
     CII   My ongoing saga of not sure what im doing.. i successfully install my new wiring harness, or so i thought . its has started fine several times, now it will not  start.  Battery Good, lights work  check my connections seem fine .I am not getting power to my horn, coil and distributor. power to the switches for lights, but no power to the Ignition switch (White wires). any ideas ..        Cheers jimd.

Online timsdad

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Re: C11 ignition switch
« Reply #1 on: August 24, 2020, 06:58:46 am »
Just follow it through with a test light.

Ray
Just a motorcyclist.

Online camman3

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Re: C11 ignition switch
« Reply #2 on: August 24, 2020, 08:29:09 am »
Good ground connection? ....and plenty of them ?
Graham
1957 C12
In sunny (sometimes) Christchurch, Dorset, UK

Online Ginge

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Re: C11 ignition switch
« Reply #3 on: August 24, 2020, 10:36:29 am »
Horn, coil and dizzy are all earthed to the frame ( or the common ground).  All usually have power to them ( with ignition on) and activate when earthed.

Depending on how you are testing it might be a dodgy earth between battery and frame.

It seems odd that you have power to lights but not ignition.  That must be in the switch surely?

Unplug some circuits from the switch and see which circuit is the problem one.

Test lights and logic.



Ginge.

Online Owen

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Re: C11 ignition switch
« Reply #4 on: August 24, 2020, 12:46:25 pm »
If it was a dodgy earth from the battery the lights would be effected as well. More likely a feed from the switch as the coil and horn are off the same circuit. A Ray said follow it through. Start with the ignition switch down to the coil?
1940 C12 (350cc)
1945 C10 & C11
1953 C10 & C11

Offline johnintexas

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Re: C11 ignition switch
« Reply #5 on: August 24, 2020, 09:44:14 pm »
Is everything run through the switch in the headlight?  Could one of the grub screws on the switch in the headlight have backed off?  Can you run a single wire from the battery directly to the dizzy bypassing all the switches?  If you still get nothing you have a ground problem.

John in Texas
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Online Owen

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Re: C11 ignition switch
« Reply #6 on: August 25, 2020, 07:41:40 am »
You would need to run it from the battery to  one side of the coil and then the other side to the distributor
1940 C12 (350cc)
1945 C10 & C11
1953 C10 & C11

Offline intrudin

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Re: C11 ignition switch
« Reply #7 on: August 29, 2020, 01:22:40 am »
Thanks everyone for your input, the gremlin seems to have vanished i suspect it was a ground issue.

Offline intrudin

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Re: C11 ignition switch
« Reply #8 on: September 22, 2020, 02:07:18 am »
So that dam Gremlin came back!!!  my ground is good i get power to lights,and ammeter only.. No power to the white wires for ignition switch and the blue and white wire feed to horn and dip. could this be a faulty switch????

Online Owen

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Re: C11 ignition switch
« Reply #9 on: September 22, 2020, 07:22:35 am »
You would need to trace it from the switch to find out.  Try pushing the ignition switch inwards when you turn it on, I've had a switch that was loose and did not make good contact until I bent the two holding prongs in on the switch?
1940 C12 (350cc)
1945 C10 & C11
1953 C10 & C11

Offline intrudin

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Re: C11 ignition switch
« Reply #10 on: September 24, 2020, 05:11:26 pm »
Thank you will give it ago .. if im getting to the switch  lights work that's all. could be internal  i.e. faulty  switch??

Online camman3

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Re: C11 ignition switch
« Reply #11 on: September 24, 2020, 06:19:15 pm »
Is it a new or old switch? If old and possibly tarnished contacts, a wash out with some contact cleaner aerosol, if you can get it in there, may sort it  :-\
Graham
1957 C12
In sunny (sometimes) Christchurch, Dorset, UK