I have problem with installing the Drop Sonic 7 pickup in Ibanez RG1527
Prestige 7-string guitar. It sounds like a noisy single coil not as a humless
humbucker when i installed it (red-contact,green&bare -ground, and black&white
soldered together on split. The factory bridge Ibanez pickup V-77 has only three wires
(red, bare and white (?)

. Could you please help me with the right schematics for
that guitar ?