I think this is the one where you have to align the red part of the wheel with the gray part of the wheel. So if the 6 is a gray number, align the wheel so 1 and 6 are together and then whatever number is in gray that it has you put the number in red that is with it. Hopefully that explains it.
6=1 is the hint. If you look at the code wheel you'll see that the numbers 6 and 1 are diagonally opposite each other on the wheel. Now just punch in the numbers that are diagonally across from the other numbers. --- "Now hatred is by far the longest pleasure; Men love in haste, but they detest at leisure." Lord Byron
lol sorry. 6 equals 1. So if I remember correctly, the numbers it shows are like 837 or something like that right? Well if 6 equals 1, on the wheel, align 6 and 1 so they are together. Then whatever red number is with the grey number 8, that will be the first number you need, then etc. lol