Outlet controlled by switch
That's why they used 3 wires. That 3rd wire carries the hot all the way to the switch (probably the red) then the other wire (probably the black) brings the power from the switch back down the chain to each device, like a long loop.
Hammerlane probably has a drawing of this already and will probably be along shortly.
#1 - If you don't know what you're doing - get a licensed electrician!
#2 - If you follow my advice and something bad happens see # 1
Electricity bites hard, and it could be the last thing you feel... Good Luck!
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