This is INCREDIBLE information! I've got a 64ri 345 as well and the terrible controls and super dark tone are really tough at times to deal with. I have very little idea what any of what you posted means but if you've got a chance I'd love to talk about it with you more in detail! Mine is of the Frost Blue variety. Super pretty guitar that plays great, just want to get the usability up.
Can't believe I didn't know there was a dedicated Gibson forum! I'm a die hard gibson guy looking to get some info on my es345's wiring and found this forum while searching for info. Currently own the following: Es345 64ri Es330 59ri R7 m2m '63 junior The 330 is my favorite of the lot, my dream guitar and it is every bit as good as I had hoped.