My brake warning light is pretty much on all the time(it does go out but is on 90% of the time. The sensor has been disconnected due to the fact i've got the Brembo upgrade. I've checked and replaced the yellow brake cap . the fluid is fine and where the sensor has been disconnected by the discs. It's been re soldered and joined but the light won't go out. Plus i've had the brake light switch replaced.The car brakes fine and it's been like it for a while know and its just a pain. Any help would be great thx.