According to Terry :

The op said there was only two wires at the switch.

That's correct. What makes you think that I implied otherwise?
That's what a switch leg is.

The way to make the light burn is to take it out of the switch and
wire it in parallel to the existing light.

Dat's what I said.
--
Chris Lewis,

Age and Treachery will Triumph over Youth and Skill
It's not just anyone who gets a Starship Cruiser class named after them.