I have a set of barely used Alembic BT JZ Activator pickups and preamp (with the filter). They were installed in one of my basses and never got used. The set is complete and ready to be installed. The only modification I had to make was to cut the battery connector wires to remove the connector from the battery compartment. It is included with the set. The 2 wires just need to be spliced. The pickups still have their leads attached and all plug-in connectors (solder-less installation) are still connected. All mounting hardware (nuts, washers, pickup screws, etc.) are included.