Technical 59 Impala - Basic Wiring Help

Good Evening,
I am in the process of trying to get my brake lights working.
I have purchased a new brake light switch, new turn signal switch, and new rear wire harness for taillights.
I am running into the following issues:

1. When I step on the brake pedal, the driver side front blinker light and driver side rear taillight come on.
2. When I start the car and pull the headlight switch all the lights come on in the rear and when I try the blinkers only the passenger side blinks and nothing on drivers side.

Any suggestions would be greatly appreciated.

Thanks,

 

What happens if you step on the brakes with the key on and try the turn signals? When you pull the headlight switch on, are you turning on just the parking lights or bypassing that and turning on the headlights? Those cars didn't run the parking lights with the headlights. Does everything have a good ground? If I remember right these cars use their metal light housings as ground.

 

Your turn switch is miswired….. read this: https://www.jalopyjournal.com/forum/threads/turn-signal-wiring-how-to.869492/