does anyone have input on which wire to trap for the 12 volt and the ground? i just the kit, i had to atleast try it out

 

we'll the blue and yellow wire works good for the 12 volt but i taped the ground to bare metal. i can't find a brown wire listed on most diagrams for ground. the sound quality is far better than any fm transmitters, and maybe the radio but is no way comparable to a CD player or a headunit with an actual aux input.

 

Anybody in the NorCal area with this mod or a similar one? I'd like to listen. Words just can't describe the sound I guess. So it's better than FM transmitters but not as good as CD? On a scale of 1 - 10, with 10 being CD quality, what would you guys rate this?