Fatboy Vintage Electronic Upgrade features - 3 CTS 250K vintage pots +-10% tolerence with smooth operation, 5 way switch, 22 gauge cloth wire, Fatboy reproduction Paper in Oil .1mfd capacitor, bus wire grounding. The only wires to connect are the hot and ground to the jack and ground to trem claw or bridge if a hardtail. Full wiring instructions included.

Volume, middle tone (neck, middle pickups), bottom tone (bridge pickup)