I acquired a set of P-Bass pickups that I am reliably told sound very good. One problem is that one of the pickups isn't working. The other problem is that they have 5 wires coming out of the harness, a black, a white, a green and a red and another with a clear plastic shield. Round poles. They have obviously been worked on unsuccessfully before. I have no problem getting them fixed if they're quality pickups, but I'd at least like to know what they are before I spend money on them. I'd post a picture of them, but they're P-bass pickups with a weird wiring harness. Any ideas?