Help with rear light harness

[crashmod]

I recently replaced the rear light harness on my 85 k10 and need help with finding the right connector for the intermediate harness. Basically the previous owners did a pretty bad hack job of the wiring on this truck adding accessories al over the place so some of the wiring bad to be rewired or completely replaced. It is an LMC rear light harness 36-3101 and they claim it is a factory original connector that is on it. Its actually a pretty decent harness from them. Problem is the previous owners replaced the wiring connector on the back of the truck and done away with the original connector. I would Ike to be able to find the right connector that plugs into the harness instead of having to cut it and rewire it. Does anyone know who the manufacturer of this harness is or know where Incan find the right connector for it? Any help would be greatly appreciated.