dont get your guns...

My seatbelts came today I just need to know where the third ancorage point is on my van.
I'm just putting lapbelts in as it's rare for anyone to travel in the back as I have the double cab seat. So the middle belt is in, but i'm looking for the last hole nearest to the sliding door. The van used to be a minibus so it has all the points I just cant seam to locate it and getting frustrated, therefor mot thinkng clearly. Grrr!
