Hello there everyone, I have a very important question because I need help. I put new pickups on my bass, I shielded with copper foil tape, new preamp module, I wired everything properly. The bass works on passive and active mode, on passive mode the signal is OK it’s loud no problem, but when I flip the toggle switch on active mode I can’t understand why the signal is so quiet and it’s not from the battery i put fresh new one, is it the problem from the battery connector or the connector wires, or from the toggle switch because it has a little clicking noises or something from the preamp module or something from the wiring cables I can’t guess from where is it actually. Can anyone help me and tell me how to solve the problem please? Thank you.
Here is the wiring diagram that I was using to do everything