ok when i installed my new sony head unit i got it to play music from cd's in the trunk-mounted changer but it won't play any sound from the in-dash cd player or play any sound from the radio...i must have wired something wrong, also the amp in the trunk now only has a red light instead of green...plz give me some suggestions or thoughts

 

bump

 

Hi, I'm only new too this site but give me a chance. The red light on the amp is a power light. Check your fuse and make sure it is the correct rating. Also check the earth on the amp as that may not be too good. Are you only getting sound from your CD changer or nothing at all?

 

only sound from the changer, radio and the indash cd player are not playing sound