You will find the brake light switch just behind the top of your right side aluminum foot peg mount. 2 heavy electrical wires joining then they go down into a threaded plastic cylindrical thing. All black plastic. Grab a flashlight and half way down this threaded thing you will see a grooved twist knob. Turn on the ignition key (don't start the bike). Your headlight, taillight and front blinkers will come on. Turn this grooved twist knob a little bit at a time while trying both front and rear brake lights. If the front brake no longer lights the brake light, you went the wrong way. Turn until you find the happy medium where both brakes will light the brake light. Hope this helps. I had to adjust this when I installed my Yosh FE.