I mixed up a little ProSeal and put a thin coat on three holes where the GEA 24 Engine Indication System and F-00145 GEA24 Adapter Plate mount. This is a little strange because it mounts with four holes. Why doesn't the 4th hole get ProSeal? I wonder if it has something to do with grounding?

Anyway, after doing that I installed the four screw heads and tightened everything down. I had to remove the cooling fan assembly yet again.

Then I put ProSeal on all four of the screw heads on the forward side of the firewall.

I think I need to go back now and take a look at the CO2 detector installation as I think the instructions will make more sense to me now that I know what all the various Garmin numbers are. Might be a good time to go ahead and install it.