They do.
However, the Grey jumper that came in the Aux switch wiring bag carries both a fused (20A) BAT+ and fused (20A) Ignition to the rear blunt cut wires via jumpered pins (wire loop) in that grey connector. It has to be plugged in way up under the dash. It's behind the headlight switch but near the firewall.
There's an extra pinned blunt cut wire in that jumper that connects to the "pass-thru" circuit pin on one of the AUX connectors under the hood. You can loop from an AUX of your choosing to back into the pass-through circuit to carry it back into the cab on that blunt cut pass-through wire in the grey jumper. If you need to pick up the BAT+ or Ignition that's on theat jumper, you can splice in or de-pin the line going to the rear frame blunt cut wire. Use fuses if you tap into either of those wires going to the back. I'd also use the device fuse if supplied (I'm going to connect my BD 2WD low range override kit) or change the AUX fuse to the same rating that came with the device.
@thestuarts has a doc he put together but I don't know if he published it here yet.
Look at the bottom half of page 7 and you'll see...