Vts engine, need help with a few sensors

[Saxo-Guy]

1.
http://i779.photobucket.com/albums/yy71/guyyy/IMG_0493.jpg
http://i779.photobucket.com/albums/yy71/guyyy/IMG_0492.jpg
Anyone know what i have to plug this into ?
2.
http://i779.photobucket.com/albums/yy71/guyyy/IMG_0491.jpg
http://i779.photobucket.com/albums/yy71/guyyy/IMG_0489.jpg
Whats is this for ?
3.
http://i779.photobucket.com/albums/yy71/guyyy/IMG_0494.jpg
what does this connect to ?
4.
http://i779.photobucket.com/albums/yy71/guyyy/IMG_0487.jpg
Lastly, will this be ok till i get a blanking plate ? Im not to sure how it works if air is forced out or what ? But if people jam one pound coins in i assume this will be ok !!
Any help would be great ! cheers

[Dan-Jnr]

1. Look like the fuel relay connector that goes under the ECU
2. Plugs in to one of the sensors on the throttle body.
3. Pipe work that goes to the Carbon canistor inside the drivers wing
4. Guess this is the EGR valve hole, not 100% though.