Hi guys. Great forum.
I hope someone can help. I just installed a bta8100 with universal fast screw down harness tapping into existing wires on an alpine factory radio. Radio has tuner and CD. Problem now is the sub works great with CD however when I tune radio it's a disaster.
I can only tune radio to first volume level 1, then I get only noise from the sub and nothing from any of the other speakers. Cannot turn up volume to 2 - too loud garbling noise only from sub.
Does anyone know why this would happen to the radio only ? The original plug was as directed plugged back in the radio. No changes. Just tapping into the correct wires.