brake lights don't work??

[rodstored-72]

ok guys,
i know i have asked this before, but i am still not able to find the problem i have no brake lights what so ever. i have all new wiring from m-h from the rear harness to the body harness to the engine harness & now a new dash harness & they still don't work when the lights are turned on the pass. side rear light comes on but no brake lights. when i have the lights turned on the only lights that work are the headlights. i have no blinker or corner lights as well??? i am mainly just trying to get the brake lights to work!!! i think it's a ground, but i have no idea where to look!! i would be very much appreciative if someone could give me some clues as to what could be the problem. i also have replaced all the fuses(since my new harness has the new fuse block as well) all the gauges work & when i turn the blinkers on they show up in the dash but they don't work on the outside??? please help!!!!! i have also replaced all the bulbs!

i could really use some expert advice!!!

with many questions... rodstored-72