I recently bought an 05 Titan and was putting my mastercraft trailer and noticed my turn signals do not work on the trailer or truck when the trailer is hooked up. Running lights and brake lights work. If I push the brake and then use the turn signal the turn signal on the trailer seems to work but that is the only time it works. On the back of the trailer there are two lights on the right and two on the left. I noticed if i unplug one of the two lights on the right then the turn signal on the boat and trailer work. It seems to me that the trailer lights are using too much amperage and when it is cut in half it works perfect. Please advise on a solution. Thanks.