That diagram is for a moderm 5226 fixture with only 3 current-carrying screw terminals (one on either side of the switch, & one on the load side of the light), plus a ground screw down near the bottom. The older (1960s) fixture I wanted to use has 4 current-carrying screws (one on either side of the switch, and one on either side of the indicator light) but without a ground screw near the bottom. I am aware of the diagram you referred me to because I now also have a current version of that 5226 fixture. The screw colors on the old fixture are: black on the supply side of the switch, brass on the load side of the switch, while the screws on either side of the lamp are both silver. An ohm-meter check indicated that the 2 silver-colored screws are connected together. I tried connecting the switch temporarily to the outlet
at my workbench, and found that the switch does work, but the light could not be made to work, so I took the old fixture apart. Here is what I found: The switch is connected to the black & brass screw, just as you would expect, with an internal connection from the brass (load) screw terminal to one side of the actual indicator lamp. The two silver screws were connected internally to each other, and to the other side of the lamp. With this setup, the black & the white of the supply cable could be connected to one side of the fixture, and the black & white of the load cable could be connected to the other side of the fixture, with no wire nut required to tie the neutrals together. I suspect this would not meet modern-day code though since there was no grounding screw. And, the lamp was defective, probably from the fixture being bumped around in the parts drawer for so many years. SO thanks for trying to solve my query, but I will have to use a modern light & indicator fixture after all. It is to be used to control an outside receptacle to be mounted on the exterior wall of a cottage, and I'll have to marrette the two neutrals with a pigtail to the fixture to make the lamp light up. BTW, the line diagram is correct in that Leviton install sheet, but the actual 'picture' of the wiring
is not, as it shows only a supply neutral (2) coming from the supply cable at the bottom of the box , but no neutral going to the load out the top of the box.