I wouldn't bother with that bracket unless you wanted to mount that switch to something stationary like the dash, roll bar, floor, etc. I certainly would not use that bracket on my shifter handle. That button looks like one used for a trans brake, and not a typical one for a line lock. Those trans brake switches tend to get mounted in the steering wheel on a spoke, hence all the coiled up cord for it. Maybe no one makes the old style line lock switch any more (?)