I'd be interested in a how-to instruction for adding the cargo 12V plug in the LC. Is it simple enough for non-experienced DIYers?
I'd say it's a perfect project for new DIYer. (search for EOD Guy's Ride for many other mods I have completed on the LC).
You will need:
The 12v outlet (avail on amazon)
Crimping tool for ring terminals (Amazon, Harbor Freight)
1 in-line fuse holder
1 butt connector (kit avail on amazon)
2 ring terminals (Amazon or Harbor Freight)
1 "M8" nut (metric)
1 - attach the in-line fuse holder to the red wire on the 12v outlet (use a butt connector)
2 - attach a ring terminal to the in-line fuse holder and the black wire (ground) on the 12v outlet.
3 - Gain access to the 12v battery, fold back the pink plastic protective sheet.
4 - Disconnect the neg battery terminal (12mm).
5 - Carefully remove the red hard plastic cover from the positive terminal on the battery (the top pops up approx 30 degrees and the larger, horizontal area, pulls straight sideways, I used a hook tool). Once removed you will see a threaded stud with no wires on it, attach the red wire from the "fuse holder/12v outlet from step 2, secure with the M8 nut, replace the red protective cover and plastic sheet.
6 - Attach the black wire (ground) to one of the bolts securing the "jack cradle to the body". I prefer that vs the neg battery terminal so you don't end up with a lot of wires attached to the battery, but perfectly fine to attach it directly to the neg batt terminal stud.
7 - Reconnect the neg battery terminal (12mm).
8 - Route and secure 12v outlet in the "jack storage area" with wire ties. I'd use that area for easy access.
If you want to hard mount the 12v outlet (not necessary), you will need to fabricate/buy a mounting flange (3d printing may be an option).
This was over simplified and not my intention to insult anyone's skill set.
(edit) I posted further down in this tread, additional information on what I use etc.....