05-30-2016, 11:08 PM
Krupator, I have had that problem and found the issue to be caused by "stuff" (dust, dirt and road grime) causing the switch actuator (small black plastic rectangular rod that works in the switch body) to bind in the switch body. This actuator is pushed in to ON by the brake lever and returned to OFF by a small internal return spring. I removed the switch in toto and washed it in a cleaning fluid while exercising the actuator. I checked the actuator for free and full movement and did not lube it so as to keep it dry to not attract and hold "stuff". There is no position adjustment on the switch itself as it sits in a post hole and has a screw fixing. In any case the brake lever adjustment is such that the brake light now comes on just before the brakes bite. That's where I like it. That was some time ago and since then no problems even though I am sure some lubricant has been applied to the switch when I have been lubing the brake lever pivot bolts etc.
There is a possibility that your switch is knackered so don't discount that.
Hope this helps.
Cheers
There is a possibility that your switch is knackered so don't discount that.
Hope this helps.
Cheers