The Jazzwick project still sits on hold as I try to figure out this devilish problem. Here's the scoop: This is a pair of ebay pups that came with new pickup leads but a used control harness. I desoldered all of the pots and cleaned them up before installation. After installation things weren't going well. First no sound, then after diagnosing a cold solder joint and a small detail in wiring that went unnoticed because of a worn fold in the instruction sheet right over said detail I finally got sound to come out but it was dodgy and I didn't seem to have any volume control for either pup. I chalked all those problems up to the used harness and ordered up a new one. When that arrived, I was surprised to find it already soldered up so I installed it and the problems continue. First, though the output jack is wired correctly, the signal will only come out if the plug is pulled out so the tip detente is lodged on the first contact. This jack is wired precisely as the other one but doesn't work the same. Second, I still don't have any volume control for either pup. I do have tone control and both pups are working but neither of the pots affect their pups volume. I'm leaning towards thinking that there's something wrong with the internal preamps in these pups. How both of them got that way is anybodies guess but since the harness is new and the wiring isn't complicated at all, I'm at a loss to come up with anything else. Any idea's?