Right brake light doesn't work when lights are turned on

[Chevyman680063]

Does anyone have any idea why my right brake light and turn signal are not working when I have my lights on. A few months ago it was working fine, then I put a new taillight bracket on because a previous owner had put a bracket not made for the truck on and drilled a hold through the bracket for the wires to run through, they also had spliced the taillight wires together. I had to undo the splice wires to get them through the old bracket but I respliced them after I got the new bracket on. I made sure the wires were connected back the way they were before and even tried reversing them but neither worked. The right brake light and turn signal work when the lights are off but not when they are on, any help would be appreciated.