I already added a 12v plug under the seat that is always powered. It gets power directly from the battery and is run through a 15 amp inline fuse. I'll be using this one for emergencies and when I need to use my Slime portable compact air pump (which requires 15 amps).
Here's a photo of that one. It's the big thing with the spring cover on the left above all the other cables under the center of the seat.

The factory provided 12v socket cable and connector is the cable just below the one I added. The cable is folded and the connector and cable are well taped. I pulled the tape off and used pins I ordered that fit these connectors. The dummy plug that seals the end of this connector is only missing the pins. I added the pins and ran a wire pair into the right saddlebag through a grommet. The factory cable is run along the right side under the seat and through/around the divider in the opening designed for the factory 12v option and that's the same place I connect the plugs. Here is the factory cable in place.

I used a white zip tie to keep it in place.
I bought my 12v socket at Wally World (both of them) for far less than the factory option. The socket I put in the saddlebag is different than my other one. This one cost me all of $4.97. Add a few $0.20 pins and some wire and solder as well as a few stainless nuts and bolts and it's done. I tried crimping the pins onto the wires but it was not a good physical connection and the wire pulled right out so I soldered them. Much better connection anyway.
Here is the finished 12v socket in the saddlebag. I located it in that little recess in the saddlebag that seems like nothing will ever really fit into anyway. Now I have something useful there.

Not only am I using the factory provided cable for this one but Honda also provided a dedicated 10 amp fuse in the fuse box already! This socket is only powered when the bike is running or on ACC. I'll be using this socket for recharging my cellphone/tablet/BT headset or whatever small device while on the road.
I do want to re-do the front option connector with the pins I ordered that are made for these plugs and add my Gerbing power connection to the ACC connection along with the GPS power feed I already added but that means removing all the panels and top shelter to get at it and I am waiting for the warranty replacement middle cowl to arrive, one that doesn't have a broken tab, so I only take all the panels off one time.
Here's a photo of that one. It's the big thing with the spring cover on the left above all the other cables under the center of the seat.

The factory provided 12v socket cable and connector is the cable just below the one I added. The cable is folded and the connector and cable are well taped. I pulled the tape off and used pins I ordered that fit these connectors. The dummy plug that seals the end of this connector is only missing the pins. I added the pins and ran a wire pair into the right saddlebag through a grommet. The factory cable is run along the right side under the seat and through/around the divider in the opening designed for the factory 12v option and that's the same place I connect the plugs. Here is the factory cable in place.

I used a white zip tie to keep it in place.
I bought my 12v socket at Wally World (both of them) for far less than the factory option. The socket I put in the saddlebag is different than my other one. This one cost me all of $4.97. Add a few $0.20 pins and some wire and solder as well as a few stainless nuts and bolts and it's done. I tried crimping the pins onto the wires but it was not a good physical connection and the wire pulled right out so I soldered them. Much better connection anyway.
Here is the finished 12v socket in the saddlebag. I located it in that little recess in the saddlebag that seems like nothing will ever really fit into anyway. Now I have something useful there.

Not only am I using the factory provided cable for this one but Honda also provided a dedicated 10 amp fuse in the fuse box already! This socket is only powered when the bike is running or on ACC. I'll be using this socket for recharging my cellphone/tablet/BT headset or whatever small device while on the road.
I do want to re-do the front option connector with the pins I ordered that are made for these plugs and add my Gerbing power connection to the ACC connection along with the GPS power feed I already added but that means removing all the panels and top shelter to get at it and I am waiting for the warranty replacement middle cowl to arrive, one that doesn't have a broken tab, so I only take all the panels off one time.