Look in your manual and turn to the page with your fuse block setup. I believe, but don't quote me, but I believe that the rear power socket is in the interior block under your dash to the left. Of course, if you just go through it, you should be able to find a switched fuse in there...get one of these in-line adapters, and bam...switched power access.Where is the easiest switched power to get to? Need to install cruise control.