I was going to post this myself - for example look at the recent boards from Ibanez in the EHBs etc with different voicings and gain so they can be used in different models. If I were the EE for Ibanez, and I am an EE, I'd design the minimum number of boards that can be used in the largest number of models with just different plugs.It looks like the "wiring board" is a standard unit, possibly used across several models. It's possible the pin connector is just un-used on your model. It may have been for a different model that came with a pre-amp or battery connection that yours doesn't have. And in the case of your model, they just ignore it.
Try Thomann, some of the Harley Benton strings are pretty good from some reports. I'm waiting until my next large purchase to throw in a couple of sets so they effectively ship free. I used to use a cheap brand for my 4s I got off ebay for years as they were OK, lasted decently and were cheap. I haven't seen them for sale in a while, but I mainly use 6s now and they didn't make a set for them. There's a string forum here where you can check opinions on brands and models too.I'm not afraid but my wallet is .
