my plug seems to be different than anybody else s . On all posts that i've seen you put a wire between wire 1 & 8 to read the faults. My plug doesn't have a wire on position 8. there are 5 on the bottom left side & 2 on the top row. It is a patrol 10/07 3.0LTR xd30 turbo diesel. how do i test for faults?