So I just upgraded the pickups in My Squire Classic Vibe Jazz to a set of Bass Mods BMDC-4 hum cancelling. I had already modded the wiring for a volume, blend, tone with pull for series switch so none of the electronics are stock. I figured I'd just follow the previous wiring no problem but I seem to have hit a snag. At this point both pickups work when solo'd or when the blend is set to center. When I switch to series though I'm only getting the neck pup. I'm testing this just by tapping the pole pieces with a screwdriver. No hum or apparent grounding issues in any of the settings. The only difference from the previous wiring arrangement is that these are dual-coil humbuckers. From the factory two of the wires are connected so you only have a hot, a ground, and a shielding wire unless you break the factory connections. I just attached the shielding to the same spots as my original grounds since the old pickups didn't have a shielded cable. Is there any reason why this shouldn't work? I'll post some pictures in a few but I'm wondering if there's something fundamental I'm missing here. Any help is appreciated.