Hella supertones?

[ZR36]

2978529786
Hey guys im trying to install some hella supertones. Does anyone know what pin 86 is wired to?

And why do these seem to be predominantly in only subarus?

[Umai Naa!!]

12V ignition feed.

Fashion, mostly.

[ZR36]

Why do they even provide a relay when nobody even uses them.