I used to have 4 A-B-C switches set up on my "etertainment center". Three of the switches were each hooked up to three vcr outputs, the output of each switch was hooked up to the inputs of the fourth switch, with the output of that switch going to the TV. From the sound of what you are asking, yes, you would need a cable from each unit going to wall outlets, then a cable to the appropriate switch.,.... Unfortunately, the burglars liked my setup so much, they took the whole thing! (the vcr's were all set to record from different stations at different times, thus the 9 units - AH, the joys of FTA - I can get all on G-19, and watch "live" or record to the hard drive.)