Headlights do not work

Okay, so everything I look at (your diagram and my book) shows yellow and purple being the ground between low and high respectively. I test the yellow and purple wires at the dimmer switch harness and they show constant ground voltage. I then test all the wires in the harness for the dimmer switch to be sure and find some that seem like that could be the problem. It is the grey side of harness and there is a yellow (4) and grey (5) wires that show 6 and 8 volts of ground telling me there is a bad ground in those two but I don't know what they are for. Then I test the last two brown (12) and yellow with orange stripe (13) and they actually change voltage when I hit the bright switch. Brown goes from 6 to 0 and yellow w orange goes from 8 to 6. Problem is I don't see those colors anywhere on the diagrams in my book or your pictures. Any thoughts? I don't mind running a new ground but I can't figure out what those actually ground to and I don't want to burn anything up.

Here is a picture of the grey harness. Yes, I double checked each wire. I have a wire running from the orange wire up front at the headlight which I know is coming on and off with the headlight switch. The grounds however don't work. I have to assume that yellow wire in number 4 that isn't getting a solid ground is the one that would be for the low beams?

Okay, so if I ground that one properly that should fix a part of the problem. But I don't see the purple changing or the yellow/purple switching like it shows in the diagram. Or am I missing that? Any thought on the brown and yellow with orange actually doing switching when hitting the brights?