Hi all I've got some brake light problems which are now the only issues holding me back from putting the bike through an MOT and hopefully being able to ride again. FRONT BRAKE I've fitted a new brake light switch at the front lever (the original had disappeared) However, there is a variable delay between the switch "button" being operated and the brake light actually coming on. This was happening when I first fitted the switch to the lever in its usual position. I removed it from the mounting as below so that I could manually operate it, to rule out any issue with the lever operation. I've recorded this in a video here - listen to the various delays in change of voltage (switch connection kicking in) - after the switch button has been pressed. I can only conclude that there is a hardware fault inside the switch. The button 'clicks' as expected every time, but the internal switch connection isn't happening until after a random delay. Very odd. When a good switch is fitted (from another bike) the delay issues are resolved. So I'll be ordering another new OEM part. Has anyone else experienced anything like this? REAR BRAKE This is showing 10.89v at the violet/black supply, but showing '1' when I check for continuity across the terminals of the switch. This is regardless of whether the footbrake is operated or not. I think this means the hydraulic switch is duff?
It's a very simple circuit, so a new switch certainly seems like the solution. As regards the rear, I'm not familiar with your particular multi meter, but I'm guessing the '1' refers to an open circuit with infinate resistance, which would mean you were correct, that the switch is duff if it doesn't read very low resistance when the brake is operated at the pedal. Hope this makes sense
