I didn't realize it was that way until I loosed it. It's tight, so just be prepared.
To remove the brake light switch, first unplug it, then slide the plug through the opening above the clutch cover (the open area just above the oil filler cap). Then work the wires back and down between the engine and frame. It's a tight fit, but with patience they will come out. That's how you remove the O2 sensor too.
If you plan to use the pressure switch that comes with the rearsets, you'll need to clip the wires and attach them to the wires on the switch. When you install the switch on the master cylinder, you have to bleed the rear brakes.
Good luck with the install.
Last edited by My Dog Ziggy; 11-18-2012 at 08:51 PM.