Where is the immobiliser box on a 2000 Toyota Hiace?

[billjeffrey2001]

I've lost all keys to my Hiace. Need to find the immobiliser box to get some keys programmed. I've been told its behind the glove box - can't see it there. I know there is an immobilising device on the injector pump but this isn't where the code is held. I am told it is a yellow box with immobiler Written on it. Sounds easy enough but I just can't find it.
Please no educated guesses such as try under the seat - I've done all that!

Thanks