First off I love the feel and play of a Warwick!!! Nothing makes a bass growl like the mixture of exotic tonewoods they put together. But alas I hate the stock MEC's with a passion!!! So, here we go: 1.HAS-Sound JB3 5-Way Rotary J Harness This pre-wired J. Bass harness includes one master volume control, a rotary 5-way pickup selector switch, Bass Midrange/Tone Control, and an output jack. Includes your choice of tone capacitor. Solid shaft pots. Rotary switch offers the following pickup selections: Position 1- Neck Position 2- Bridge + Neck in Series Position 3- Bridge + Neck in Parallel Position 4- Bridge + Neck in Series, Out of Phase Position 5- Bridge 2. JC4 HE/M2 splitcoil humbucker A high end splitcoil humbucking JB fourstring pickup with the narrow sensing area of a classic single coil, the JC4 HE/M2 gives you a full range single coil tone with none of the headaches of previous designs. Our advanced coil design employs carbon steel blades, special ferrite magnets and full shielding. Its full bass and tight lowmids blend fine with very articulate midrange into sparkling harmonic overtones. Just the right amount of output works great in full passive operation and interacts meticiously with today´s internal or external preamps and/or EQs. JC4 HE/M2 pickups are available in matched pairs ore as individual units.