Originally Posted by Pleiades

...mainly because the bigger type is much harder to locate neatly and as I mentioned they just aren't as waterproof or robust - the DIN type is simply a better solution.

Most of my 12v accessories I have cut off the cigarette lighter plug and changed to DIN type, for my phone (for which I couldn't remove the original plug) I use something like this...



You can also get the above with multiple outlet too.

I have a made a longer lead so the plug end can reach into my tank bag (it also has a more substantial compact water proof plug)