I just wired a previously-working pickguard and pickups into a new Strat build, transplanting it whole. I changed nothing in the wiring apart from running on two new wires to the jack socket. Now the volume does nothing until the very last part of its travel.
I must have wired something up wrong. What’s most likely? I wired the jack cup backwards? Thats the easiest to fix, because I have to take the neck off to remove the pickguard.
The bridge pickup is wired into the middle pickup’s tone control (it controls both).
The gitar has a treble bleed mod added (not by me)