Okay, I have a issue with my tuner. So I have traced it back too the fuse box, it look like it's wired in too the bottom of the part of I think its fuse place 24, but its the one for the ST-10 SUB, but I have notice it has been working since I left the lights on. So I am wonder if I need too enable a sub woofer aux with a the stereo or is there any other fuses That I am missing? Or is there something else i am missing?

 

Why not just tap it into your cigarette lighter circuit? These tunes draw next to nothing.