hello, I installed my Clearwater Glenda lights directly on a Altrider crash bar. They are positioned inside so in a fall they will not make contact with the ground. Their location gives you the triangular light effect for safety. The dimmer switch was installed on the top left corner of my speedometer. Kinda far to adjust at night with incoming vehicles, I would put it on the handle bar left side if I had to do this again for quicker and easier reach while riding. Hope this helps. good luck