steering wheel lock: Leaving the key in the ignition, with the switch in the "OFF, Not Locked" position does the job nicely. I would not spend any money for any other gimmick. Of course, my Jeep is a 2006, and later models don't have that switch position. There might be a market. Of course, even LATER models don't have a steering lock at all, so perhaps not...
Lighting: I can do the same thing, although without the automatic feature, with a four pin trailer connector (currently used on my Rubicon) or a DPDT ON-ON or ON-OFF-ON switch (about $4 on eBay, previously used on a Datsun pickup). Over the years, I have developed an extreme distrust of over-engineered solutions to simple problems. I doubt if I would buy the system described.
just my opinions, no doubt others would disagree.
Good luck.