I recently made a post about the brake light coming on and staying on all the time, and didn't much help. I eliminated the e-barke switch, so that meant that the problem was low brake fluid, proportioning valve, or MC. Since I wasn't experiencing any barke problems I was reluctant to do much more until I understood what was going on. Fortunately I found a guy who said unplug the top connection on the computer mod next to the mc and then turn the ignition to on, but do not start it,for about 15-20 sec, turn it off, then hook it back up. That solved the problem.