I used jack, in a parking garage, on concrete, no problems. Understand unstable ground. Might need to carry some plywood or short 2 x 4's for cribbing.
All lights were off when I activated the strobe system. So anything you see on was energized by the strobe system.
Yes, some light appear to be flickering in the video, such as brake lights, they really are flashing not flickering.
2-years later, sorry from another Fallbrook guy, I just added a GREAT kit! About $380 including fast shipping. Took 27.5 min to install including fighting with the Ford trim. Great flashing all around (see my poor video). Can use dimmer handle to activate/deactivate. Bad news, Lightning is new...