1 - yes, that's how it worked back in the day, if you want 'running lights' there's an electrical tech tip that should help
2 - yes, the brake light filaments are also the turn indicators, going thru the turn switch they are activated [or interrupted if the brakes are on] when you signal, but the brake circuit still goes from a power source [light switch probably] to the brake light switch, then to the tail via the turn switch
]Bill
