I installed some one leg nutplates on the SkyView EMS box because I need to install the screws from the other side in case this box ever needs to come out.
I then installed the EMS on the outboard side of the subpanel support rib. You can see here why I needed to install the screws from the other side. The top skin curves down here, so there would be no room to get a screwdriver on these screws if they were installed from this side..
I also installed nutplates on this side to attach the Lightspeed ignition box.
Here’s the Lightspeed ignition box. You can see the screws that attach the EMS just above this box. There is another pair just below the ignition box. These are all reachable without removing the ignition box. There is just enough room in front of the ignition box for the RG-400 wires to curve downward to run along the top firewall stiffener without contacting the firewall.
