Light problems

[62 Barnfind]

I am having light problems with my 62. Head, front turn signals, front and rear markers are working. Brake and turn signals only work half the time and then only one side works or I have 4 ways in the rear. I feel there is something wrong with the brake switch causing the problem with the lights. Today I had all lights working until I pushed the brake pedal with the left turn signal on and then nothing again. Then I hit the brakes again and I only had the right brake lights that would work. Is it a brake switch or is it a ground problem? The truck was just repainted and the lights worked before. The paint shop did remove the column to paint the inside. Any help would be great.