Help identifying ground lead and signal of switch.

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can me figure out lead what?  can't find schematics online , switch didn't come anything.

http://www.radioshack.com/product/index.jsp?productid=12706308

just trying figure out power goes ground goes , signal wire goes.

don't connect 5v, gnd , signal pin damage arduino.
the 3 terminal common, open , closed find on relays.
how wire switch depends on using for. give more details , can help.


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