Resistor question

[Sungaisu]

Customizing a switch in one of the dummy panels, and want to ask you guys for your opinions, since I know I need a resistor on this LED I have.

Simple breakdown: When switch is on, LED comes on as well.

Just need a suggestion on how big of a resistor I need.

My epic paint skills to show you the wiring:
http://i47.tinypic.com/t9jz89.jpg

Picture of a rough draft:
http://i47.tinypic.com/126fac0.jpg

Hopefully between those pictures you can understand how it's wired up.

 

[diredesire]

depends on the specs of the LED, and your supply voltage.

Google "LED Calculator" and it will tell you all you need to know.

 

[Sungaisu]

Thanks!