SOHC.co.uk Forums > CB500/550
Left side handlebar switch question?
McCabe-Thiele (Ted):
As I have aged some colours are harder to tell apart especially with faded wiring.
I have spent the morning recording my wire colours and where I have not matched colours - I'm done in for today but I did remove one wire & it cured the ignition light illuminating via the P & H but lost the front side light working.
I'm done in for today so tomorrow with a clear head looking at what Ken & Bryan have flagged up the solution is getting closer.
Oddjob:
If you connect the sidelight into the brown/white circuit Ted you should get that back but only when the normal lights are on. The front sidelight won't work in park.
mickwinf:
remember my post earlier in this thread, the sidelight and rear lamp are powered by the brown wire NOT the brown/white wire which powers the speedo/tach illumination. so when the handlebar switch is on P the brown wire is energised (from black wire I think) then travels back to the ignition switch TL1 terminal then bridges to TL2 which sends the lecky to the front sidelamp and rear lamp. when the park position on the ignition switch is engaged it connects the two tl terminals directly therefore lighting sidelamp/rear lamp without ignition being on. It took me ages to work it out on mine as it is not how you would expect it to work
McCabe-Thiele (Ted):
Timely reminder Mick - I just removed a single wire Black/Yellow trace wire from the right side bar switch that was connected to the solid Brown side lamp wire.
This has stopped the ignition powering up when key in parking light position. All I have lost now is the side lamps & instrument lights now not working when switch is in the P or H postion but head/dip fine. In park ignition switch position side lights work.
I have put a test lamp on the Black/Yellow trace wire this becomes live when the right bar switch is in position P or H. Looks as though I just need to connect this wire to the normal side lamp power feed wherever that is.
Kojaycat do not sell the right wiring diagram so I will look at the various ones I have to find the right connection point. So close once again.
Oddjob:
--- Quote from: mickwinf on October 29, 2023, 03:40:11 PM ---remember my post earlier in this thread, the sidelight and rear lamp are powered by the brown wire NOT the brown/white wire which powers the speedo/tach illumination. so when the handlebar switch is on P the brown wire is energised (from black wire I think) then travels back to the ignition switch TL1 terminal then bridges to TL2 which sends the lecky to the front sidelamp and rear lamp. when the park position on the ignition switch is engaged it connects the two tl terminals directly therefore lighting sidelamp/rear lamp without ignition being on. It took me ages to work it out on mine as it is not how you would expect it to work
--- End quote ---
This is true IF Ted was using the 500 switchgear but the 550 ones use different contacts and different coloured wires as a result Mick.
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