Ws-420 Eq

[Razzman]

Or you can do it with the use of PAC LC-1 switches for anywhere from $15-20 a switch and do exactly what you all are asking without any hassles. They can even be dash mounted for that factory look. The PAC LC-1 connects inline with your amp RCAs and allows volume control on any channel. The only hard part is running long enough RCA from the HU to the dash and back to the amp.