I think Fast and Dirty means he left out the sensing wires from going through the PDM.
Do you understand what he did?
I think his quick and dirty idea was to intercept the wires from the Power Delivery Module (PDM) to the CHAdeMO connector at the large round connector at the firewall (?) at the back of the hood. I would have found where they exit the PDM, since it's a lot shorter from there to the CHAdeMO connector than going all the way back to the firewall then forward to the CHAdeMO connector.
He mentioned the interlock problem briefly, but did not elaborate on what he did. Interlocks are usually just direct connections from interlock in to interlock out. It's just designed to detect when a plug is not in place. So he possibly just joined the orange and pink wires together inside the PDM. This defeats the plug missing check, but doing it properly would require getting access to the back of the large round connector. From the wiring diagram he printed, it looks like you only need three [ edit: four, see Edit 1 below ] extra wires to the CHAdeMO connector: CANH, CANL, and CAN ground (earth). Note that CAN GND seems to be missing from an earlier post here, compared with the diagram Dala found. CAN ground seems to be pin 5 of F23. It's probably worth twisting at least CANH and CANL lightly, or perhaps all three CAN wires.
You still need that extra wire in the VCU, to activate the quick-charge relay, and of course you need the quick-charge relay itself and its fuse. He didn't say why he needed to obtain power from somewhere, but I think the reason is that they leave out the wiring that should go to the relay to give it power. It's possible he didn't even plug the relay in where it's supposed to go, as there is no wiring there. I have no idea how hard it would be to get to the wiring under the relay socket. Perhaps he just siliconed the relay in place, to stop it moving about.
Edit 1: Four wires. There is also pin 9, which goes to the quick charge relay. This is presumably the power in from the relay. The extra wire in the VCU connects to the coil, and the other end of the coil goes to +12 V via the new fuse.
Edit 2: IF the wiring is missing from under the relay, you will have to replace those with your own as well. From Dala's video:
Pin 2 of the relay appears to be power to the quick charge board, and that's pin 9 of the large round connector (F23).