Additional light wiring

I have already installed an additional brake light on the Givi top box and now I would like to connect it to the system. What would be the best/easiest point to hook it up? Also, to which wire?
Thank you in advance.

Best access is to remove the left rear panel —the one with the trunk lock. That will expose the ECM and tail wiring. Unplug the 6-pin connector which feeds the rear lights. The brake light wires are Green Yellow (G/Y) is 12V and Green (G) is ground. 

The wiring is only 20 gauge so it is best to use Posi-tap connectors (the red ones).

Here is an eBay link, but you should be able to find these locally in an Auto Parts store:
https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l1311&_nkw=posi+tap+wire+connectors&_sacat=0

Thank you so much, Tim.
On the way to the garage. :-)

Just finished. It works great. Thanks again, Tim.
Luckily, I didn't have the 20 gauge connection at home so I had a valid reason to ride to the neighbour town.
Cheers,

Frank

Next project is, additional tail light and turn signal on the Givi box.
I assume, I can use one or two of the remaining wires from the same 6-pin connection. Am I right?
Which is the tail light wire and which is the turn signal?
Thanks again.

Black/Brown - Running Lights
Light Blue - Rt Turn Signal
Orange - Lt Turn Signal

Green - Ground/Earth
Green/Yellow - Brake Lights

More than happy for someone to confirm; I have just copied this from the chart I made when I fitted an Admore Light Bar ten years ago.
I had to make a chart as the Admore wire colour-scheme doesn't match the Honda one.

Thank you very much, Mike.

Pleasure, Frank. Good luck!

Standard HONDA Wiring Colours  

Tail – brown w/white stripe (SWing FSM =  Brown/Black)
Brake – green w/yellow or red stripe (SWing FSM = Green/Yellow)

Left signal – orange
Right signal – light blue

High beam – blue
Low beam – white

Ground/earth – solid green

Thank you very much, sonuvabug.

rustysdream wrote:

Thank you very much, sonuvabug.

You're welcome Frank ... just confirming MikeO's posted information.  

Good luck with your mods. BTW - Is that your 2009 for sale on Kijiji?