I bought a Duncan 1/4 pound bridge pickup and wired it in with my stock neck pickup just like every schematic I've seen, but something isn't working right. When I run both pickups a full volume my signal cuts in half and only the bridge pickup works. If I turn either pickup down while the other is at full volume it pretty much totally cancels out. For example if my neck p'up is at full volume and my bridge is at 90 % I can barley hear the neck pickup and vise versa. Does anyone have any idea of what I'm doing wrong?