I have a 2002 durango with the factory tow package and the problem is this. All the lights work great on the durango but I have no driver side brake on the trailer. It has turn but no brake (same bulb). Trailer wiring is fine. I chased the green/red wire from the plug all the way to the firewall and it's not getting power when the brakes are on under the dash somewhere. Where does the turn wire meet with the brake wire to become a break and turn wire at? Maybe my problem is there. Any ideas or help would be great