http://archive.tf2maps.net/showthread.php?t=5796


Readme:

This is a switch I modeled for TF2, based on the switch from the game "Tribes 2."
There are 3 skins, imitating those from the capture points.

Sounds are included, along with a prefab. Since sounds can't be played for one team only,
blue got the 'capture' sound and red got the 'lost' sound.


INSTRUCTIONS

Extract the materials and models folders to your "/team fortress 2/tf" folder.
The t2switch.vmf file is a prefab to get you started.
The prefab includes sounds and triggers with outputs (fires sound, skin change, trigger enable/disable).

You could put the prefab in your sourcesdk/bin/orangebox/bin/prefabs folder; then hammer shows it under prefabs...
or you could just open the vmf with hammer and copy/paste.

Do whatever you want with this txt file.
And... I think that's it.

-Cerulean (steam: logantscott)