I think the only thing I have left under the dash is the AC unit and the brake switch.
I did get the control unit mounted to the metal above the fuse panel. I ran the wires and tire wrapped them to the frame and then cut them to the correct length for the control unit. Some I ran under the unit and the others were right to the side. I left a little extra in the wires in case I do have to move it at a later time.