I have a 02 ram quad cab. I recently installed a sony head unit and i only get sound when playing the radio. When i turn the cd, sirius, or aux on it doesnt produce and sound. When watching the display it should be playing, the songs display for sirius and the timers works for the CD. I thought it was a head unit problem so i install an alpine and the factory all with the same problem. When switching from tuner to cd or to sirius something clicks in the dash. Checked all powers and ground all are ok. Anyone have any ideas.
Thanks
Mike

 

what sound system is in the truck, lower stock or upper end option?

 

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