Rear brake light switch isn't activating brake light - Honda CBR250R Forum : Honda CBR 250 Forums
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post #1 of 5 Old 03-03-2016, 08:02 PM Thread Starter
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Rear brake light switch isn't activating brake light

So i recently bought my first bike, a 2012 CBR250R with 3.7k miles. I took it to get a safety inspection today and failed because my rear break doesn't light up the break lights. The front brake lights it up, but the rear brake does not. I'm not very mechanically advanced in the slightest. So what can i do to fix this? Or how much would it cost to just take it to get fixed at the dealership or motorcycle shop? I need it fixed asap to get my license plates before my temp expires. Thanks!
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post #2 of 5 Old 03-03-2016, 08:07 PM
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Originally Posted by deweylg32 View Post
So i recently bought my first bike, a 2012 CBR250R with 3.7k miles. I took it to get a safety inspection today and failed because my rear break doesn't light up the break lights. The front brake lights it up, but the rear brake does not. I'm not very mechanically advanced in the slightest. So what can i do to fix this? Or how much would it cost to just take it to get fixed at the dealership or motorcycle shop? I need it fixed asap to get my license plates before my temp expires. Thanks!
Theres an adjustment nut next to the rear set, turn the black little nut. I had the same problem.
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post #3 of 5 Old 03-03-2016, 08:28 PM
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Originally Posted by MannyFresh650 View Post
Theres an adjustment nut next to the rear set, turn the black little nut. I had the same problem.
Yes, look around the rear brake pedal. You should find the switch with no trouble.

There should be a locking nut, and and adjuster nut.
Loosen the lock nut. Turn the adjuster until the switch is working to your satisfaction.
Tighten the lock nut.
Retest.
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post #4 of 5 Old 03-03-2016, 10:30 PM
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Quote:
Originally Posted by don'tpanic View Post
Yes, look around the rear brake pedal. You should find the switch with no trouble.

There should be a locking nut, and and adjuster nut.
Loosen the lock nut. Turn the adjuster until the switch is working to your satisfaction.
Tighten the lock nut.

Retest.
There is no locking nut on the rear brake light switch.

The switch just has a black plastic knurled adjustment nut. Rotating the adjustment nut clockwise will raise the rear brake light switch on its mounting bracket, thereby activating the brake light when the pedal is pressed down. Make sure you don't raise the switch too high, which would cause the brake light to be lit all the time... you want to have a small amount of movement at the rear brake pedal before the brake light comes on.
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Last edited by MotoMike; 03-03-2016 at 10:37 PM.
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post #5 of 5 Old 03-03-2016, 11:06 PM
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Thanks Mike. I was too lazy to go out to the (detached) garage for the specific details.
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