https://www.oznium.com/led-bolt
I used a black, aluminum housing, no lense, 16mm in each step. I used a dab of red loctite on each one to keep the nut from backing off. For the 16mm if you have a 5/8" drill bit it works perfectly.
When you have the step removed you look at the top and have the two mounting holes there. I just made a straight line between the two then measured to the middle (approx 3 inches) and drilled it. Simple and worked perfectly
Wired in with the led cargo lights in the bed, do not wire them in with the license plate lights as you can get a ticket for that bc you can't have white lights on in the rear while driving