Here's a very nice, Kelling Sound, Jazz Bass harness (Volume, Volume, Tone). It has the solderless wire ports, split shaft pots, treble bleed circuit on each Volume pot, a Jensen .05 uF capacitor and push back cloth wiring. I got this on TB a couple of weeks ago. Sounded super sweet with the DiMarzio Model J pickups. Pure, 60's J tone with the tone control rolled off, but easily comes back to life, with the tone control cranked. The tone knob spectrum is kinda like an Orange Drop without the aggressive, attacking, high end. I switched it out for an Obsidian Wire harness a few days ago. I was seeking a slightly brighter cap because the Model J pickups are a darker, bassier toned. Hand Written Kelling Wiring Diagram is included. Your PayPal payment gets it shipped via USPS w/Tracking to your Lower 48th US state.