That’s not really plug and play then like it says. I have a hexcan but don’t want to waste a output on a horn. I just had a Denali left over and was seeing if I could use it.
You can't really use the horn output for anything else anyway as it only outputs 12V while you have the horn button pressed, and there doesn't seem to be a channel configuration which doesn't include a horn, except for configuration 1, and this rather wastefully uses two outputs for the lights, so you are no better off. You could drive both lights off one channel to free up the other, but the unused light channel would get its voltage reduced if you used the dimmer control on the lights, or get disabled if you switched the lights off, so that's not much use for anything else either.
I think the software should let you set up your own channel mapping, but unless I have missed something, it seems like we are not trusted to do that!
For this reason, after recently acquiring a HexEzcan to replace my Fuzeblock, I decided I might as well use the horn output. This allowed me to take my second horn off the relay I had it on, which tidied up my wiring quite a bit. I use configuration 4 and run both my auxiliary lights off one channel. I use one channel for powering two 12V to USB adapters, which leaves just the brake light channel free.
I ripped apart my secondary brake light, which fits on my Shad top case mounting plate, and removed the original bulbs from inside the fitting and replaced them with a high brightness 40 LED strip. I was going to connect this to the brake output on the HexEzcan, but decided to try running it off the rear light supply instead. Somewhat surprisingly, unlike the original bulbs, this does not upset the Canbus, so I don't need to use the HexEzcan for this, so now have one spare output.
As standard the brake light output normally puts out a lower than 12V supply continuously (for the lower brightness rear light function) and ups it to the full 12V to get a brighter output when the brakes are applied. I suspect that if I set the HexEzcan rear light brightness to the same 100% as the brake light output, and turn off brake light flashing, then I will have a spare continuous 12V output which I can use to power some other accessory in future.