No clue parts... please help

[fe519]

I'm trying to change the vehicle speed sensor on a 91 corolla. The odometer and the speedometer does not work and i figured that it is the vss. I actually went to the junkyard and got some parts but took everything that actually connects to the transmission. The only 2 parts is the pictures below. Can someone tell me what these parts are and what they do?!?!?!? I changed the triangle part in my car but that did not solve anything. Thanks for the help.

http://f2.pg.photos.yahoo.com/ph/fe5...&.dnm=8592.jpg

[Pineapple]

The triangle one is shifter switch. I'll say the other one is speed sensor if the shaft can spin.

[fe519]

what does the shifter (triangular thing) actually do?

[Pineapple]

It connect shifter in cabinet to tranny so tranny know if you put it at P, D R or N.