The minimum requirements for wiring is to run a 20-gauge multithread, 2 wire with separated-insulation
to each vacuum port. The wire connects to the finish plate, not the backing plate, to two screws. Leave 8 inches of slack and then strap or tape the wire to the vacuum PVC and splice it into a wire running down the trunk line PVC all the way to the vacuum unit location. The wire will then be connected to the power unit. This wire provides the ability to turn suction on and off when inserting the hose in the wall port or having an on/off switch on the hose handle. If you also want an electric nozzle for carpet grooming then you have two options. First, buy an electric hose with a pigtail cord. Plug the hose in the inlet and plug the cord into a nearby electrical outlet. Or run 110 volts to inlet ports called SuperValves.
The 110V wire can run from the closest electrical box or light switch, it doesn't run from the power unit in the garage or basement. Let us know if you have any more questions by calling 1(800)997-2278 Monday-Thursday 7am-5pm PST.