I retested, this time with it in series lol not sure if I did it right (0.00 all the way across)? but not sure if it matters anymore. I feel dumb, It's only when I got down to unplug the wires below the fuse block that I saw a small chip of isolation missing from the back side of one of the orange wires, It was in turn making contact with the floor of the cab and grounding out. I didn't see it before but this time it threw a spark as I lifted the plug.
Shouldn't that blow a fuse though?
I suppose PO could have hard wired that spot in the fuse block, I have seen it before on some really methed up fuse blocks. will have to pull it off and make sure it's not to altered.