I'm new to the whole idea of modding your instruments, so bear with me guys. I'm looking to modify my squire vm jag bass special (idk if they could've added more nomenclature if they tried). Preferably I wanna change the pups out. Was looking at some SD Qp's for the swap of the P pup. Main question is, is the only thing that's "active" in them the bass boost, or are the pups themselves powered by the 9v as well?? Little help here would be great. I'm grasping in the dark