For sure I am entering this thread ... very late, ... but ... to address your original question.
The first picture you show in the very first post is a Hella Micro Plug. These are very European and mostly used in Europe and South Africa instead of the typical 12V cig. lighter we are most familiar with here in the states.
You will also find these on all BMW motorcycles to power almost all their accessories ... including heated clothing.
They are also used commonly for powered down riggers in fishing boats for marine applications. The picture you show is exactly what that receptacle was designed for (it is a marine application Hella Micro plug) and available in the US here:
http://www.sportco.com/productcart/pc/viewPrd.asp?idproduct=42548&idcategory=144
These are also standard on the Conqueror Safari trailers used by some of us here on the Expedition Portal.
They are 12V and will work for your application. Simply just a European plug standard.
As for 12V plugs, ... most of us Land Rover folks are familiar with this company and they have excellent products:
http://www.mudstuff.co.uk/12v-sockets.shtml
Their raised mount is on a 45 degree angle and is pretty slick.
Also, if you are looking for some way to mount multiple plugs and/or switches, they have these mud pods that are designed for Defender 90s and 110s for the dashes, but I plan to use one in the Conqueror Safari trailer to put some 12V plugs in the sleeping bunk to plug a Hella Map light ... for reading, ... and a 12V for my Mac Powerbook 12V adaptor.
http://www.mudstuff.co.uk/MUD_pod_mini.shtml
Just sayin
Dendy