Where does this plug go?

I cant figure out where this plug goes. Long story short, I took apart my engine to replace the headgasket's, didnt mark where everything went, and this is the last one left and I cant find a suitable place for it

http://64.53.223.135:90/car/prob/1.jpg
http://64.53.223.135:90/car/prob/2.jpg

its on the passenger side of the engine. Its the one with the bright green plug. You can see on the second picture just how long it is and where it can reach... I just cant figure it out. Any help would be appreciated.

I can't really make it out. It looks like to be the ABS vacuum switch that is located on the passenger side , close to the battery. the wire loops around the engine and connects to an exsisting connection, around the brake booster.

Again this might not be it, but take a look at page 5 I think.
http://199.79.180.162/prepos/files/Artemis/Public/Recalls/1999/V/RCRIT-99V193-6648.pdf.