[Brian]

Lawson, like you I have trouble posting photos on here. I'll try and explain once again....
Get your inner cap.
Place it on the table with the prongs facing down [you'll have four holes looking at you]. Grab one of those gaskets as illustrated in the above picture, and manoeuvre it around until you find a place where it will just fall into place over a spigot provided in that inner cap.
That's where it sits. Leave it there!
Now, get the outer cap, and position it so it fits over the inner cap/gasket and the protrusion in that inner cap fits through the hole that's in the inner cap.
wriggle it around until the tang drops into the slot.
The outer cap will now be snug up against the gasket and the inner cap.
Now pick that entire assembly up in your hand off of the table.
twist your wrist, turning that whole assembly 180 degrees so the prongs side of the inner terminal is facing you.
You will see the prong of the outer cap is sitting through the hole in the inner cap, exposing a groove.
Fit an o ring into that groove.
The whole assembly is now done.
Oh wait!!! you forgot the HT leads

38 beat me to this post. I know you don't need to fit the leads; this is for the 60 display engine right?