Take apart signal lite switch? - Hi beam on with right turn

^This.
To be fair though, the quality of the cheapo ones is, well, suspect.
Something that if going through all the effort to replace, and hoping for a long term service life, is worth going OE or at least known quality aftermarket.

If you’re curious and have time, rip ‘er apart and see what you can figure out. Maybe a Wrigleys gum wrapper and a dab of JB weld can fix it.