Hi i have a 96 ch700-713 dump truck that i bought from a widow was a one owner etc.. It was set up for air brakes and a semi plugh in back . I switched it to the 6 pin round plug also put in the brake controller.. My problem is we have tried EVERYTHING i have singles 4 ways and marker lights . And even the brake controlers works perfect .. the problem is we can not get brake lights on the trailer !! The trailer i 1 yr old econoline trailer and it has a 5 wires the truck has 6going to it.. Does anyone have an idea what the heck i am doing wrong? Is there a brake switch we should be hooking into on the truck? Thats what i think is wrong ? Any help would be great thanks jerel
