Electrical draw issue

Went away for two weeks and came back the battery was dead. before I went away everything worked fine, I came back replaced with brand new battery it starts and runs fine but the tailights do not work.

Turn the key to on position without starting and the headlights and front indicators work, apply the brake or put in reverse and they stop working. when applying the brakes on their own they are very faint, If I put in reverse the brake lights come on very faint.

Any thoughts? I tried tracing some of the wires to see if they were wore down and rubbing on metal but no luck.