Hello I have a 63 with turn signal/brake light problem. It's all on the left side the drivers work fine. The park lights all work. but when I try the turn signal only the L-rear comes on not the front and the brake light is not coming on when I brake on that side. I checked grounds and used a test light seems like it's not getting power to either wire at the bulb when the signal is on. I've replaced the sockets and at one time not long ago all this worked fine but now it's not. Any thoughts would be great.