You posted under Intermatic TN11C timer.
If you have a different timer, then add a comment and describe timer, or add a comment and include photo of your product for best answer.
http://www.fixya.com/support/r6568559-post_photograph_fixya_questions_answersTN timer comes with red and turquoise trippers
Red OFF tripper #107TN222
Turquoise ON tripper # 107TN221
Place trippers around outer edge of dial at on-off times you select.
Turn lamp ON, plug lamp into timer, plug timer into wall.
Manually rotate dial clockwise to watch lamp turn on-off.
Move switch on top of timer both directions to see how to set switch.
After setting switch and trippers, manually rotate clock dial until current time line up with arrowhead located on inner dial.
Dial rotates as time passes, and trippers push switch that turns lamp on-off
Add a comment for more free help.
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