In a nutshell I have an 08 northern truck that's seen salt. I like to simplify my rig, is there any way to completely redo wiring for trailer? I have a prodigy 2 controller. in the back there are so many extra plugs, wires, etc. which I will clean up. I think the prodigy goes off inertia so do i need all factory relays etc? I only need one 7 way which i have inside the box for pulling my 5er. I may give E-trailer a call done things with them before very knowledgeable. Thanks in advance for any help.