Gen2 wagon yes?

I did this to my previous wagon.

Check the light sockets of the brake lights and check the colors. Now check the colors at the sockets of the lights in the garnish that dont work.

Your neutral/ground wire will be common to both sets of lights, but the switched wire will be different.

Note the color of the switched wire at the brake lights and find that wire in the plug in your attatched pic.

Find the color of the switched wire at the garnish lights that dont work, find that back at the plug in your pic, cut it and solder/attatch it to the switched wire from your brake lights.

Hope that helps.