hey im changing out my killswitches on my Fender Jag-Stang, two three-way switches with the center position as off.
though when i opened the Jag-Stang up, i found this:

notice the four "prongs"
what i bought was this:

notice there are only 3 prongs...
did i pick up the wrong piece? will it work?
...can someone show my some thing that will tell me how to do this (if itll work)?
PS: im a complete n00b at all of this (though i have soldered before, like 5 years ago in high skool)
and yes this was posted in the killswitch thread, but i got no answers