Your a different year then mine so maybe they changed somethin but on mine it's on the front of the block behind the radiator. Down towards the drivers side if I remember right. Before you start cuttin and hackin just unplug it first to see if it gives you the results you want.
It's really meant for a Edge Comp box. That's where the most gain's are seen. I did it on my truck when it was stock and i didn't notice a difference at all. It came up with codes right off the bat. Don't do it unless you have a Edge Comp or EZ.
i used to have it unplugged with my truck.....last time i did it the truck acted up badly and started getting surging and getting dead pedal. I wouldnt recommend it after seeing what it did to my truck! I think it messed up my VP