1. Located and drilled four #40 pilot holes in the cabin heat mounting plate I made the other day.
2. Taped the plate onto the cockpit divider wall and match-drilled the four holes.
3. Opened up the holes in both to accommodate #8 screws.
4. Used a one-lug nutplate as a drill template to install four nutplates on the divider wall.
5. Cut out a notch from the cable hole to the right edge of the dividing wall. (I later opened it up even further to better accommodate the attach nut on the cable.
6. Test-fit the cabin heat cable.
7. Removed, Scotchbrited, cleaned, and primed the cable mounting plate. Not sure what color I'll paint the plate -- probably either light gray to match the divider wall, or dark gray to match the instrument panel above.