For the subwoofer outputs, can it be adjusted (the bass) from the Premium radio. If not what do I need to do? Everything is installed correctly, but it appears there is very little power going to the subwoofer, it bumps very very weak. I'm stumped can anyone help please!?

 

IIRC, you have to turn the subwoofer output RCA's on the radio on. I think you have to turn the H/U off, then press and hold the button and it will say if you want it on or off.

It should say in the instruction manual.

 

Look in the manual how to turn the "SW Control" on. But basically it's as was said, turn the HU off. Press and hold the multi-button until the menu appears then switch SW Control to ON, exit the menu, turn the HU on and bam!

 

Thanks everyone I think that may have done the trick! I'm actually not doing the install, my bro has my ride and he called me and asked since he didn't understand the problem. He thinks that may have done the trick. Thanks for the help everyone