You have to take the bedliner out and on the back side there is a spot that is marked to drill it out. They lined back up perfectly with the rubber grommet when I did mine. Sorry about the glare on the second picture but I think you get the idea.
Does anyone know what connectors are used in making a power harness that plugs into the map lights to connect a homelink mirror to? I have seen someone who at one point was making them, however he has not responded to me.
So you were able to lay this directly on top of your plastic bedliner? I was hoping to do that myself but all of them say they will not fit with the DIBL.