Subaru’s center-mounted “Passing Lamp”... something I've never heard of until now

 it was called “Passing Lamp” for the first two year of production, it was changed to just “Center Lamp” in 1982, the final year of its brief three-year run.

https://www.curbsideclassic.com/curbside-classics-asian/curbside-classic-1981-subaru-brat-with-third-eye-passing-lamp-a-brief-passing-fad/