I've just installed wiring for my heated jackets, Satnav, and camera.
First, I needed a connection to the battery into which I can plug my battery charger.
For that, I made up a couple of short leads, one red with an in-line 25A fuse - 28A thin wall cable with 30A ring terminal. The black one with a 30A ring terminal and 28A cable. These leads were significantly protected and terminated with a female 2 pole connector and strapped to the battery using the rubber battery retaining strap. It isn't going anywhere!
That connector is used to connect the battery charger and can be used to power a portable tyre inflator.
My own accessories are connected by 28A cable to that same connector - that is not to say all 3 things are connected to it at once. Only one is connected at any time, the Battery Charger, Tyre inflator, or one of my accessories. From there, I have a cable that runs to a location near to the brake fluid reservoir on the left hand side. That lead is triple protected with polyester woven sleeve, spiral bound sleeve, and tape; and cable tied to stop it rubbing against anything.
The power feeds directly into a relay, which is triggered by the connector that is provided on the RTL for connecting a GPS - just ahead of the brake fluid reservoir. Before the relay, the lead that comes from the battery is always live and I am ultra cautious about that. But the 30A fuse will blow instantly should it short out on anything. The accessories only get power when the relay is turned on, which will happen after that short delay after turning on the ignition. So all of my accessories are turned on/off with the ignition.
The three fuses provide power for the GPS/Camera, front heated jacket, and rear heated jacket. Fuses are 7.5A or 10A, but the cable I have used is 10A thin wall cable. I used 2.8mm Hitachi connectors for the joints for the Satnav/camera; 6.3 mm male/female connectors for the heated jackets. Connectors are used wherever the cable might need to be separated to get to other components for servicing.
I have use 'Powerlet' connectors for the heated jackets. One is let into the plastic underneath the right hand rear grab rail. One is on the upper side of the left black trim - just ahead of the rider's left knee. Powerlet are the type used by BMW and are sometimes referred to as 'Hella' connectors. They are quite robust and have contacts rated at about 20A. The heated jackets have individual heat controllers - but even before we got these, it was easy enough to unplug or reconnect. Jackets are worn close to the skin - on top of a thin shirt, so they don't need to be hot.
The camera is an Innovv K7 Front and rear camera. Those are mounted above the rear light, below the rear top box, and on the flat part of the grill above the front trunk. The GPS unit for this is stuck just inside the front trunk - there is a ledge below the trunk lid. The controller is on the small shelf in front of the right hand speaker. The Video Recorder/control unit is mounted on a foam board which sits behind the zipped liner for the front trunk. There are a few cables coming in from the top side of the frunk which I have yet to tidy up. Everything was nice and tidy before I had to put the camera stuff into the front trunk. It simply would not fit anywhere else and it has 6 cables going into it. I had to order an extension lead for one of the cameras. Unfortunatley, modern video cameras for vehicles need access to 'always on' power - this is so that when it detects that the ignition has been turned off, it can transfer what it was in the middle of recording to the SD card, and then shut down the recorder properly. It takes 10 - 20 seconds for it to do this after the ignition has been turned off.
I've attached a circuit diagram that I created so that I didn't have to think too hard while I was wiring it. I can do the wiring OK; I can think and plan OK; but doing both at the same time? No - that isn't going to end well!!
