What are the proper pin labels for this 3-SIP DC-DC converter

[jmk]

Hello and welcome @beamerblvd

You have promoted yourself to Basic user level, read here, so you may now “attach” away.

@beamerblvd

As an aside, now I have the ERC warning “Symbol ‘VXO7803-500’ has been modified in library ‘VXO7803-500’.” I figure I can probably ignore this, but should I have edited this differently? (I imported the library into my project specific libraries, not into the global libraries.)

This seems strange.
Did you create a personal library, then import the symbol to that before modifying and saving?