Simple but works. tested and proven on a Geoptik vixen dove tail bar. Uses the excisting m3 bolt holes for a secure mounting.

There is two diffrent sized holes, one for a gneric DC cable and one for a generic USB cable.

Needs 2 M3 bolts and 2 M3 nuts for fastening, use appropriate leanght bolts for your need.

Might need a brim.