Thread update:
I removed the cap and screw
Disconnected washer jet
Removed trim panel
Removed grommet with carpenters pincers
Cleaned grommet
Cleaned Hole
Put silicone down hole
Put silicone on grommet
Put grommet in
More silicone one top
Smoothed with wet finger
Put fan heater in pass footwell on low to dry fusebox
Let’s see what happens.
