Product review (5 stars): Does the job for less than bulk wire, switches and plugs!
Couldn't find the wall lamp / sconces I wanted so took some inexpensive but cool looking exterior lamps, drilled a hole through the bottom of the mounting flange, put rubber grommet into hold, pushed this wiring through and connected to light wiring.  Then put mounting for light onto wall, attached the lights to that and now have a 2 level switch for bright or normal light from my inexpensive sconce lighting.