12V LED

I am new to electronics and am trying to wire a LED to light up when a
12V fan is on. I understand about using a resistor inline with a LED
that has a typical voltage of less than 12V.

My question is: "if I use a 12V LED like this

http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&category%5Fname=CTLG%5F011%5F006%5F001%5F000&product%5Fid=276%2D084#

Do I need to use a resistor in this situation?

Thanks

.

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