General & Technical - Intermittent brake light

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Intermittent brake light

Printed From: rsvr.net Forums
Category: Tuono
Forum Name: General & Technical
Forum Description: Everything and anything to do with the Terrific Tuono... the ultimate Streetfigher!
URL: http://www.rsvr.net/forum_posts.asp?TID=30137
Printed Date: 26 Mar 2026 at 22:56
Software Version: Web Wiz Forums 12.07 - https://www.webwizforums.com

Topic: Intermittent brake light

Posted By: Storkers
Subject: Intermittent brake light
Date Posted: 05 Jun 2024 at 21:33

Hi had bike (gen 2 tuono) mot’d garage mentioned the brake light works intermittently when the front brake is used. My usual chat I take to is typical having a few weeks of for an operation. Is there anything simple to check or easy to replace. ???

Replies:

Posted By: Spoonz
Date Posted: 05 Jun 2024 at 21:55

Squirt some contact cleaner into the micro switch under the lever and check the connections on the plug going to it are clean. Failing that it might need replacing.

Posted By: Willintolearn
Date Posted: 05 Jun 2024 at 22:10

I hope this helps:

Check the switch itself - it’s a micro switch which could have suffered a bit of water or dirt ingress ingress. A good spray of contact cleaner may sort it out. Keep the spray away from paint work though.

Check for kinked or pinched wiring around the headstock area. Check for continuity.

Check the connector - the terminals may be corroded.

If you can - prove the fault is within the switch and wiring sub-assembly before you point the finger at the loom.

If you disconnect it from the loom try shorting the loom end pins with a paper clip and wiggle away - it may be a dodgy connection there.

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Years of the big K then an Ape - one with twin Akras, AP air box mod, twin NRVs, 42t rear sprocket, great big 12V cables, 200A solenoid, 40A MOSFET r/r + headlight switch + stator cooling + PCIII map.

Posted By: Storkers
Date Posted: 06 Jun 2024 at 21:22

Lovely will get on this over the weekend

Posted By: rsvwalt
Date Posted: 10 Jun 2024 at 21:05

I think I used this on my Gen 1and used bullet connectors and heat shrink to connect it to the original plug. I'm not sure if the Gen 2 is the same switch though.

https://addictionmotorsport.co.uk/popular/genuine-brembo-19rcs-front-brake-master-lever-micro-switch-microswitch-110467195" rel="nofollow - https://addictionmotorsport.co.uk/popular/genuine-brembo-19rcs-front-brake-master-lever-micro-switch-microswitch-110467195

Posted By: legend88
Date Posted: 10 Jun 2024 at 22:12

The switch is mounted on two plastic pegs which are prone to breaking. When they break, the switch can move around and may well cause an intermittent operation.