1999 Mitsubishi Triton Air con

we don't have that model in U.S.but here is pic of a Montero it's behind glove box.

Hey mate it's not behind the glove box?

what I sent was from a car because we don't have that model in U.S. the only other place it may be if it even has one is in front of windshield the vent may lift up to gain access for it. Otherwise I can 't tell you as we don't have any vehicles similar to that. sorry