Can anyone tell me how to start a new thread? i have the kdc-x789 head unit. i cannot get the deck to output to the front and rear speakers. the amp is turned on in the menu... any ideas on how to enable the amplified speakers? the rca outputs work fine. I'm trying to set up a 3rd set of speakers. the first 2 sets are run off my amp fed by the front and rear rca's. i'm trying to run the third set off the decks amp but i can't get any output on the front or rear channel. the settings are articulate so i'm wondering if i have it set up incorrectly of if the internal amp has issues.