For the last part of the firewall drilling, I have to locate three more holes: the wire bundle penetration and the two cable penetrations. The three circles indicate a rough location for them. It may take me a week of thinking before I drill them
When I do, I can start to run wire through the top hole. Of course I have to decide how big of a hole. From my electrical plan, I counted all the wires and took a snip of the correct wire size about an inch long for each one. I then bundled them together through a grommet that I thought might work. It looks pretty good. I do plan on running some spares like I did in the wing. They will fill out the bundle nicely and I think I have the right grommet.
