This only becomes an issue if you are worried about selling the pickups later. That’s not a problem if you sell them together.
If you’ve used p-rails and a tripple-shot, the cable drilling will determine where you place the little pc board on the pickup itself or guitar body, the PCs cable should be located to accommodate that wires entry into the drilling. The cable from the pickup should be cut short enough to connect directly to the triple-shot’s PC with no slack! All the extra PC cable from the ring would likely store in the control cavity.
Of note, if you happen to break that ribbon cable, its almost impossible to reconnect it. It is possible to solder individual high temp wires to the switches PC, if you strip em short but still long enough to tin the wire and flow solder down the tinning to the pad with a needle tipped iron. The trick is to only use enough solder to make the connection. You can slide the insulation down later to cover the tinned wire to isolate the conductor. That PC is only provided to allow the user solder points. I had so much trouble connecting to the factory solder points on the ring side I just used the same pads that the pickup cable soldered to.
It took me 4 trys to do this with the ones I got on eBay. If I can do it, so can you!
One more thing, the microswitches are only connected to the ring with melted plastic. Too much heat will melt these titties. You’ll have to find another way to attach the switches to the ring if you aren’t careful!
}!€