The strips come with 3M adhesive tape on the backside. There is a metal bar that runs across the vent which is perfect fit for the small space LED. I connected them to the Power for the grille LED marker lights so they come on with the marker lights. I have also ordered blue strip lights for the hood vents, 40" Blue Strips for under the running boards connecting to interior lights, and two 20" white strips for the bed. I will post full install pics when it is done this week.
P.S. there is no bounceback on hood vent LEDs. We tested it with an LED worklight and all you see is a little light coming through the vents but nothing directed back at the driver. The LED work light was also ten times brighter than the LEDs we will be putting in the vents.