Rear brake light switch

cape

Hero member
Location
Finland
I need to find a replacement for a rusty rear brake light switch on my Jota. What is the correct size? Is the thread m10x1 or m10x1.25? And the length? Any links to point to a suitable product?
 
Thanks, but I already found one locally. Not the same as original, but should do just fine.
 

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The question regarding the length was answered by a mate of mine. It seems to be 19mm.
 

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And one thing that puzzled me earlier is how do the front and rear switch work together. Here is the answer; the original wiring diagram is not accurate, there are connector on rear switch wiring, and now the operation is obvious.

The wirings are basically the same, but for me, seeing the connectors helps to understand how it works.
 

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After I updated the front brakes I noticed I then had the brake light come on later than I liked. I have no idea if the std switch works ideally with the std bits and not so much with my 4 spots and 16mm radial master. There is no way to adjust this. I asked back then and I got a comment that maybe the switch was on its way out. It's still the same after a good few tears, I just make sure the rear switch activates the brake light as early as possible.
 
I replaced the brake and clutch master cylinders and levers some time ago (Brembo PS13). The new brake lever had a brake light switch that I could have added to the circuit, but I didn't. You can see a piece of the wiring in the attached image. The switch would work when you pull the lever, so it might light the rear bulb sooner than the pressure switch on caliber.
 

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As a spotty youth, I would set the rear brake light to come on only after a very hard push (cable brakes of course). Allowing for speed 'modulation' without a tell-tale light on, when seeing the police. Not needed today, as I only ride up to 5% below the limit, officer.

I miss little bikes that could be thrashed.

Anyway - Hi Vince, because you changed the calipers, you have changed the brake efficacy when compared to the hydraulic pressure within the system. So, yes, you will have that offset, a more sensitive switch is needed.. The hydraulic pressure in your system is now lower than before (for a given stopping effect).
 
That was an easy fix. Even though the bolt was few millimetres longer than the original, there was no need for any work. The switch came with a couple of thicker usit washers, and I only needed to bolt it on. The spanner size is 14mm.
 

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