Oh fun! When I work on one of these era RCA consoles I pull the yoke and use it with my test crt. HV connection simply needs an adapter cable fabricated from spare parts. You don't need the focus coil with the test crt, so set that aside. I prefer the sets speaker out of the cabinet and hung on a hook or screw off the side of my workbench. All said and done it's not a huge undertaking to pull those items from the cabinet. Picture shows a KCS 40 which I made a wood test CRT jig for and screwed to the front of the chassis through some preexisting holes. Notice the goofy air core horizontal output transformer Tom mentions in the rear left corner. When properly restored these aircore flybacks work just fine in my opinion.
