The first step was to remove all the ABS hardware and supporting electronics. There's a pressure vessel shown behind Seth's gloved hand that has to be safely de-pressurized before it can be removed. We'll not attempt to duplicate the owner's manual here. Instead, we'll say that you need to get one and study it before working on the brakes. Most of the wiring for the brake system wasn't re-used, but it was smarter to take the time to disconnect the wires at the connectors rather than to butcher the wiring with a pair of cutters. Unnecessary wiring can be eliminated later after the new system is up and running.