Reddit mentions of Mini Blade Fuse Tap Holder Add A Circuit Line Mini Low Profile ATM + 5A 7.5A 10A 15A, Car Add a Fuse Automotive Car

I see I was paged.

So, this is actually very easy to do, it just depends on how you want to make it work.

Option 1: Power is on all the time, even when the bike is off.

1. I like this option the best, because it gives me the ability to charge my phone even if I want to leave my bike shut off. (Like if you want to charge your phone at night without starting your bike...say if you were camping).
   
   
2. To do this solution, you need to run a FUSED line from your battery (one wire each for positive and negative). Use NO higher than a 5A fuse, install the fuse inline, on the positive wire, in the first 6 inches of wire that leaves the battery.
   
   
3. Now what you have is fused 12V/ground up at your dash (you run the wires wherever you want, but the dash is the most common place).
   
   
4. Once you have that run, its time to make the interface. You want to get yourself a 2 slot, USB charger for a car like this:
   
   http://www.monoprice.com/Product?c_id=108&cp_id=10826&cs_id=1082603&p_id=10239&seq=1&format=2
   
   And one of these:
   
   http://www.amazon.com/E-PRANCE-Battery-Cigarette-overload-protection/dp/B00D7XNN7O/ref=sr_1_4?s=electronics&ie=UTF8&qid=1394732327&sr=1-4&keywords=12v+cigarette+lighter+power+adapter
   
   You will cut the CLIPS off of that power socket and solder the fused 12V that you ran from the battery to your dash, to this. MAKE VERY SURE TO DOUBLE CHECK THE POLARITY (+/-) AS YOU GO, so you do not hook anything up backwards.
   
   Then, you just plug in that 2slot USB adapter and BINGO, you have fused 12V USB power at your dash. You can charge TWO phones, ipads, gps, mp3 player, etc....
   
   Depending on the model of the USB adapter, it may actually stay lit (small led on the adapter shows when it has power) all the time. My buddy did this exact install and he leaves it lit for WEEKS and the battery fires right up because the drain is essentially nothing. If you park your bike for long periods of time, just unplug the 2slot USB adapter from the cigarette lighter and that will ensure that there is NO drain from this mod on your battery.
   
   OPTION 2: Run this same setup, but do it from a fuse on your fuse block that gets power only when the bike is on.
   
   To do this, just refer to the Service Manual for your bike, and find the accessory power fuse. An example is here:
   
   http://screwloosedan.com/cm/albums/userpics/10001/Capture~0.JPG
   
   In that pic, the #5 fuse is accessory power.
   
   You can use an "add a line fuse kit" to tap into this accessory power and it even gives you a built in FUSE for the new line (obviously verify that the add a line kit you order is for THE CORRECT FUSE TYPE/SIZE!, this is just an example).
   
   http://www.amazon.com/Shipping-Holder-Circuit-Profile-Automotive/dp/B00EO5P2B4/ref=sr_1_2?ie=UTF8&qid=1394732595&sr=8-2&keywords=add+a+line+fuse
   
   So, for this method, you would install it the same way, but starting at Step 3, because adding this "add a line" kit will give you a fused 12V+ line from the accessores, so you just run your ground (-) line to the frame or to any common ground (like the battery negative terminal).
   
   Get those wires to the dash, and then run the steps above starting at Step 4.