The instructions for the mounting brackets say that they are removable 'Apply a few drops of Goo Gone - let set for 2 mins., to soften adhesive. Lift the bracket slowly, once removed , set aside with the adhesive side up, for 15 minns. After the Goo Gone has evaporated, the bracket can be reapplied.'
I thought the light was a reasonable price, but extra bracket kits were $9.95, and that seemed steep to me.
That's too much trouble for me. Easier to just buy a new pad.