Just checked out my 2015 for @Stealth57, No odd wiring, just a standard coil split, no caps other than on the tone pot and no resistors anywhere. Marshall is correct, the switches function as a coil split with full humbucker mode in the down position and single coil mode in the up position. There is a noticeable volume difference between the two switch settings, with humbucker mode being fuller and louder and single coil mode being thinner and quieter as you’d expect.
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While I had it open I did notice the tone cap hot leg was nearly touching the pot housing so I spaced that out a bit. I will also note, I have EBCF strings on mine and even with the tone knob maxed out as bright as it’ll go it’s still very dark sounding - if and only if - the volume knobs are at 8 or less. If you turn either volume knob past 8 or 9 there’s a drastic jump in treble regardless of the tone knob setting. My EB13 with the similar pickups and coil switching method does the same thing, not quite as drastic though.
Some of my other Gibson birds do take a significant non linear volume jump from 8 or 9 to 10 but the tone knob is still largely functional. On the 2015 it’s as if the tone knob is removed from the signal path at volume settings above 8 or 9. No big deal, you just have to remember it when you adjust tone or volume. Still sounds great.