Yeah, it is l ike a clear/creamy pipe in mine at least! I thought central locking was blue, or is that just the solenoid?! Anyway, it will be at the right hand side of the boot, right behind the light cluster, not under the carpet. Though in the GTi i think it may be behind a bit of trim, not sure on that though. In mine, it isnt behind anything, though i tucked it behind the trim panel to the right of the car, which will just pop off if needed...