I have a MEC humbucker and a Bass Mods preamp I am trying to wire up with a series/Ncoil/parallel switch. I wired everything together but no sound is coming out, and I can't figure out why. I have attached a diagram of what I have so far (omitting the bass/treble and other prewired stuff). The only thing I was not sure of was the orange and black wire which come out of the preamp.