I see what you did there...... Clever
I'm a real live wire sometimes
To the OP....
There are lots of 'How to do it' threads on UKGSer (including the better ones in the sticky section) and many thousands more on Google. Better still, there are lots videos on UBoob showing how to do all sorts of things on or to a motorcycle, some are even quite good.
Google something like: 'Adding a GPS to a motorcycle' or 'adding a phone to a motorcycle' and then select Video.
Browse through the many that will pop up, you are bound to find one you like and / or shows near enough what it is you are trying to do. Copy the method shown and the job's as good as done.
It's a safe bet that any question you type into UKGSer will have been asked by someone and answered by someone else at least once before somewhere in the world in the deep mine of information that is Google. It takes less words doing a Google search than it does asking UKGser in that you don't gave to give a lengthy (and often confusing) explanation of what it is you are trying to do. Google is quite good at working out that if you enter just four words, say: 'adding GPS to motorcycle' into the search bar, you are probably not looking for detailed instructions on how to milk a cow.
For example, plucked at random:
<iframe width="560" height="315" src="//www.youtube.com/embed/uS5L0oPIQVI" frameborder="0" allowfullscreen></iframe>
Not to be confused with:
<iframe width="560" height="315" src="//www.youtube.com/embed/ziITe09ahUs" frameborder="0" allowfullscreen></iframe>
Now, I didn't need to go to UKfarmers.com's doubtless excellent forum to find out how to milk a cow, adding in all sorts of explanations that I was new to the dairy industry, was hoping to enliven my cornflakes or any such old tosh. I just asked Google to find me something that might help me, very easily. Of course you can still ask a question of UKGSer but sometimes it's fun (and easier) to do it via a Google search. OK it takes a little bit of time and a bit of imagination but the rewards are often greater than the sum of its parts.
What is sometimes fun (and above all helpful) is to do the search, find what it is you want to do on Google and do it.... Then start a thread on UKGSer saying something like: How to fit a phone connection, add a bit of explanation on what it is you did (bods love pictures, never forget that) and add a link to anything you found helpful. People will think you are a god

trust me.
PS Don't get hung up that your 1200 has a Canbus as opposed to a conventional fuse box. In reality, the Canbus is much simpler as, more often than not, you can just add simple peripherals (like phones and GPS) to it, just like tying one piece of string to another. Just think of it as having a fuse box burried away somewhere in a box, with a convenient (ready fused) live wire coming out of it, ready to use. Want to be really safe and use a ready switched supply? That's easy. Use the live feed that runs to the aux socket. That way, if it does trip out, the worse that will happen is that the aux socket won't work. Cure the problem and the system will re-set itself (all in that hidden away fuse box) and all will be well again. You only need a relay if you are adding things that will draw a reasonable amount of current (like lights, heated grips or maybe a horn) in short anything that will draw over 5 amps which is the bike's general limit. A phone or GPS charger will be a fraction of that. How many amps is perfieral ABC? The instruction book will tell you, or Google probably will. Still no good? OK, How to work out amps? It's easy... amps times volts = watts. Most electrical items will have their wattage info available written up somewhere. Your bike is near enough always 12 volts, so you can do the sums from there.
PPS If you have an iPad or iPhone, it's sometimes useful to download a UBoob clip to it, to take into the garage whilst you tinker away. The problem comes if you do not have a reliable wifi connection in your man cave. Never fear, there is an excellent app that will allow you to store UBoob clips. It is either free (adverts that can be a little annoying) or a couple of quid for the 'Pro' version....
How? Ask Google something like, um, er, let's see what happens if I ask it for, what is it that I am try to do? Ah yes........ 'Add UTube to iPad'...... of course it is... et's see what happens if I type those four words in... Dum dee dum dee dah.... Oh there are lots of possible answers...... Scroll down a bit.... This looks promising....
http://www.pcadvisor.co.uk/how-to/apple/3400628/download-youtube-videos-your-ipad/
And go from there.
There are doubtless other ways (Google had loads) but it worked for me. I have not got the faintest idea about downloading software, fiddling about in iTunes or any such IT lite malarkey. But I needed to get a UBoob clip onto my iPad to show to a bod in a pub, without a wifi link. I guessed that it should be possible and, if it was, someone somewhere from London to Sydney to a hut in the Central African Republic would have done it and would tell me how. Four words and thirty seconds later I had the answer. It's a thing of genius.