So, I was rocking a pretty cheap kenwood head unit before and everything worked well and had somewhat good bass. Then I bought a Sony MEX-GS820BT head unit and installed it by just unclipping the old one and its harness and putting the new harness + HU in (and the rca cables that run to my alpine subwoofer amp). Everything clipped in with one exception. There was a blue wire (had a name p. cont on one side and ant cont on the other) attached to the old harness that went through some plastic piece and down under the dash somewhere. I just read somewhere it was only needed for some antenna motor or something so I just disconnected the wire so I could get the new HU in. Now I have a clear audio but with no bass. If I crank it up and put all the settings in favor of bass I can hear just a little bit of bass.
So, what could be the problem? Hard to imagine polarity being the issue because it worked well before and I only swapped the HU. Or could it be the blue wire or something else? I'm pretty new to car audio so please enlighten me.
So, what could be the problem? Hard to imagine polarity being the issue because it worked well before and I only swapped the HU. Or could it be the blue wire or something else? I'm pretty new to car audio so please enlighten me.