Yes, you will need a 4 prong brake switch to make it easy, there are ways around it, but that brake switch is the easiest way. Your original orange and white wires for the brake lights will hook to one set of contacts and the other set will get hooked to the purple wire on one side and an ignition powered 12v on the other. This is the switch.
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There will also be a light blue wire that will get hooked to the brake light side of the switch that comes from the TAC module if you plan on running cruise control.
The orange wires are constant hot power wires and hook to the 2 wires on the PCM connectors, the third wire he mentioned goes to the OBD2 connector under the dash, the connector you would plug a scan tool into.