Open following link to see clear drawing and instructions for wiring ST01C timer.
Page also has EZ programming steps:
http://waterheatertimer.org/ST01C-program.html#ST01CRed wire is capped.
Blue wire goes to Load (wire to sconces)
Black wire connects to Line wire (wire from breaker)
Green wire goes to ground.
If you are uncertain about Load and Line wires, just connect them either way, turn power ON, push on-off button, it lights don't come on, then reverse wires.
I have tested this timer, and information here is correct.
Don't forget to install CR2 battery, otherwise display will not show.
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