2001 Dodge Dakota 2001 Dodge dakote 3.9 liter engine

Electrical problem
2001 Dodge Dakota 6 cyl Two Wheel Drive Manual

the 8th number is x and there is no more trailer lights they tore off when trailer came unhooked. When I stopped I looked under neath truck some wires were exposed. They were really red and hot like the ground touched the power wire and burnt it up. But when I turned my lights on I only had front lights and no back lights on truck unitl I reattached the back lights to the connector even then I still did not have brake lights when pressing the pedal on ly lights. Then when I turned my truck off the rear taillights still were on and would not turn off so I had to disconnect from the connector everytime I stopped to get gas food etc. Then when started back down road would have to reconnect so people could see me from behind I still do not have turn signals or reverse lights was wondering if the connector is bad and is getting a constant source or a relay is stuck or would have to re wire all brake lights to rear of truck.