Rear brake not activing brake light?

[Croft]

Hi there,

Blade CBR1000rr, 2005 - back brake works but not activing the brake light - any clues to how it can be fixed?

Would appreciate some advice if anyone can help pleeeeeeeeeeeeeeeeeeeeease....

Clueless

[cs363]

There should be an adjustment on the switch - look near your brake pedal/rear master cylinder

Edit: See attached pic of the switch, you just need to screw it up or down until the brake light actuates at the touch of the pedal (allow a little free play) and then tighten the lock ring (careful it's only plastic so don't be heavy handed!)

[quickbuck]

Firstly... What are you using the rear brake for???

Anyhow, yes, it is either your switch has gone out of adjustment OR, there is a pile of road grime that has got in there.
Get some CRC CO Contact cleaner, and give it a blast out.... Should work fine.
If no joy, talk to one of the race boys.
They would have ripped the switch off on the first day they got the bike home.... (They might be keeping the road gear though).

[Leseid]

It's recommended by my Honda service guide to regularly adjust the switch every 2000km. Now why can't bikes have a service free switch? One that switches on hydraulic pressure rather than a lever position.

[CookMySock]

Check the switch and see if its moving when the brake is applied. Squirt a little CRC 556 or similar down the switch mechanism to free it up.

If the mechanism is fine, get your electrical tester and look for a circuit fault.

Steve

[quickbuck]

Check the switch and see if its moving when the brake is applied. Squirt a little CRC 556 or similar down the switch mechanism to free it up.

If the mechanism is fine, get your electrical tester and look for a circuit fault.

Steve

556 is for armatures... and flammable!
Hence the reason for contact cleaner... oh, wait, that can be flammable too... but much better for lecky stuff.

[Croft]

FANTASTIC!!! Thanks - will try these out and let ya know which one works!

Watch this space, ha!