Taillights not working

My driver's side taillight wiring harnesses get caked with mud and i have bypassed it almost entirely. now I have brake lights and turn signal working, but the top and bottom bulbs that should be on like passenger side constantly, do not work. I have a yellow wire and a brown wire going to harness and have burnt their connections. It appears that I have a yellow and a black wire that need a mate past that point. I'm assuming I'll go yellow/yellow, and go brown/black on my wires to tail light, is this correct? I know I should probably take it to a pro, but everything else has worked fine jumping it directly past the harness..