Brake Light Switch or Turn Signal Switch?

When I took the wheel off and started analyzing the turn signal switch I figured out if I jumper between the red and white terminations from the left side (turn signal, not four-way switch) of the circuit, I get tail or brake lights. I'm not sure which is which. The red wire is 12 volts with the key on, but dead if off which I think it appropriate.

I have been getting my wife to spot the lights for me while I monkey with the wires. As I was typing the post I came to the realization that I've been thinking it was brake lights when I jumped white-red on the left side, but is that maybe just tail lights?

With the headlight switch "on" I have two working headlights, both amber lights in the front are lit, both front marker lights work. In the rear I have two tail lights working and driver side marker light works. Passenger side is out (possibly a bulb I haven't noticed this before now).

While the headlight switch is "on" if I jumper between the red and white terminals on the turn signal side, my wife says that the left tail light goes off and the right remains unaffected.