As a overlander, and a member of two emergency response teams, I have to make sure my stuff is right. Save your money and MOVE ON. Received a shoe 3 sizes too big! Tears very easily However, you could also install these units directly to the battery, create a new opening where none existed prior, and install these into a location which was not previously serviced. put them up and hang towels ect. These are absolute junk. -The battery life is really long. The problem with this is that if one of these ever gets loose, it can fall all the way down and out of the mount. I am amazed by the crazy complicated, bike hangers on the market but this is a simple functional alternative.