So I bought this pos cavalier and I love it, but there is a lot of little problems. When the lights are on the right brake light is on and the blinker doesnt work. The trunk and spoiler brake lights dont work at all, but the left side works fine. Im a little confused and would appreciate any advice on what the problem may be.

 

What is the condition of the bulbs and sockets?

Have you tested the wires?

Sorry, my 87 z24 went to the boneyardz after 180k.

 

That means your right rear light assembly is not getting proper ground. Spoiler brake light is unrelated to this.