I'm wondering why this is so, as it doesn't seem like a good idea.
I can't think of any reason why the tail light/brake light should be wired into the turn signal relay, and yet, sure as gravity, when my turn signal relay dies (Which happens with annoying regularity. I'm averaging a relay a year), my tail lights quit working.
Why is this so?
EDIT: A brief perusal of the wiring diagram reveals no clues either. In fact, I don't see where the wiring connects the two, which confuses me even more.