Honda Brake light issue

[donniemateno]

I currently have this od issue with my cb500

i checked some of the other threads on here with a similarish problem to this and you guys came to the same conclsuion just wanted to check you think the same with mine

basically brake light stays on unless i push the front brake lever forward. it will sometimes stay off for a while but once the bike moves it comes on again. I am getting into a nasty habit where i'm riding and constanly pushing the lever frward with my fingers just to make sure the lights going off

reading your other threads you guys seem to think it may be the stop switch under the lever?

any advice or help would be appreciated
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Current bike: Honda CBR 600 F3
Previous bikes: Honda XR 125L5 , BMW 800 ST, Honda CB500

[Ichy]

Ummm if the switch works when you push the lever forward then it may be that the lever is sticking. Take it apart and give it a good clean. It may even be that the spring in the master cylinder is sticking, which would stop the lever being pushed back. Same advice, take it apart and clean it.

The stop switch has a little spring in it that may of corroded away. It is always worth giving the moving bit a really good blast with WD40 to see if it frees up. Fairly easy to replace the switch if it is faulty and it costs around £10.
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[donniemateno]

sorry it doesnt stay on when you push forward it goes off. but when it is touched very slightly towards me the lever goes back and the light stays on unless i push the handle forward again

when Ill get back ill WD40 the hole lot to the max and some copper grease
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Current bike: Honda CBR 600 F3
Previous bikes: Honda XR 125L5 , BMW 800 ST, Honda CB500

[map]

If I understand this properly...
The front brake lever is falling back and the brake light is coming on.

This means the piston in the master reservoir is not pushing the lever back. So that means it is not closing the brake switch. It does this when you push the lever forward obviously.

So I would remove the lever and check if anything is fouling the lever. Sometimes the rubber seals can be the problem.

I would think a master reservoir clean is required. It may be worth a refurb of the reservoir. Kits can be had for around £30 (check wemoto, e.g. here - other suppliers are out there).

HTH
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[donniemateno]

well im taking the reservoir cap off when i redo my brakes this weekend so will kill many birds with one stone

have to drill the heads off the countersunk torx as rounded! but ill get a good oppurtunity to see how everything works and lube and replace anything all in one hit

if i could get this but for my bike id be exstatic

https://www.ebay.co.uk/itm/Front-Brake-Master-Cylinder-For-Honda-CB400-92-93-94-95-96-97-98-CHROME-Fit-7-8-/261000993795?pt=UK_Motorcycle_Parts&hash=item3cc4df1c03
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Current bike: Honda CBR 600 F3
Previous bikes: Honda XR 125L5 , BMW 800 ST, Honda CB500

[donniemateno]

just an update i changed the brake light switch and she doesnt stay on now
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Current bike: Honda CBR 600 F3
Previous bikes: Honda XR 125L5 , BMW 800 ST, Honda CB500