This is probably really simple but I am making a circuit to power a led and have bought an SPST momentary tactile switch found here http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWNX:IT&item=250418796241 I was surprised to see it had four contacts, only expecting 2...what do I wire to where??? Thanks :]
I did some research on this and the best I could find was that those pins are wired diagonally. For instance, the one pin will be wired up inside the component with the one diagonal with it. Here is a link that someone posted with your same question:
http://www.e-cigarette-forum.com/forum/modders-forum/7624-diagram-wiring-spst-tact-switch-usb-mod.html
The multimeter will tell you for sure and a breadboard is good to have too.
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