Yeah, the XC may not have all the connectors that the XCTs have. The '12 XCTs came with the HID low beam, with the ballast and its connectors for the light. This meant that there was an extra connector pair under the hood, for a halogen low-beam. There was also a fog/driving light connector in there, unused. I used one of these (I forget which) for my MotoLights (transferred from my prior bike). This also meant that these would turn off automatically when the bike was shut down.
It made me sad to just snip wires in the bike with perfectly good connectors on them, but I got over that. Since then, some folks have found adapters for the Deutsch or whatever the connectors are. I also sort of recall that someone posted a link to an adapter that goes into a typical connector for halogen lights, has a branch off that for an extra goodie, and then continues on with the regular connector for the halogens. I think this was on Amazon or eBay somewhere (I know, big help, huh?).
Additionally, I added an in-line on/off (SPST) switch, if I ever want to shut them off when the bike is running (but I don't really ever use this switch). I used the official Vic switch, which fits in the blank in the dash. I had some credit at the time of sale, so that was no big deal. It's pretty close to the size of standard auto-store switches, lit and unlit, so you don't have to use the Vic switch. I have some pics I can dig out, where I have a caliper measuring the size of the Vic switch (disregarding the lip surround). This beats Posi-Taps or (most certainly) Schotchlok; I use Posi-Locks or Wago Cage Clamp connectors for all my work.
Barring the use of some stock connectors, you could add a fuse block, which is what I did on two prior bikes. This would be triggered by any old ignition-only hot wire, get its juice from the battery, and then power added lights, etc. The more common ones are (per my reading of forums over the years):