I just finished installing my X930BT last weekend and I'm having a problem with the volume and radio stations. When I and driving or slowing down the volume will just randomly start turning down and when I turn off the truck or put it in park the volume will increase to the max until I stop it manually with the volume knob. I did the parking brake bypass, but I don't think that should be affecting this. Anyone have any ideas what could be causing this issue? Could it be the power antenna wire is wired wrong?

Does the unit have a proper ground?

What kind of car is this? More information needed please.

do you have steering wheel controls added?

there is no way the power antenna wire could cause this