Hey all, here is another factory sound system question. I installed an aftermarket HU, bought all the adapter harnesses and hooked it up. All works except instead of just bass coming out of the sub I have all sound coming out as well. Could anyone let me know if maybe there is just a wire I gotta cut or something in the harness or what your thoughts are. Thanks.
2005F150 Supercrew.

 

If you have an amp check the selector on it that says full. Switch the setting. This will make the sub for bass instead of audio also.

 

Would that be a selector on the amp itself or a setting w/ the deck. Thanks.

 

It's on the amp itself.