Can i hook up a mp3 to the back of a sony cdx-gt400

By looking at the manual at http://esupport.sony.com/US/perl/model-documents.pl?mdl=CDXCA710X
you would have to purchase a FM transmitter to allow your stereo to play your MP3 player.

You can get the release keys on the link below.

http://www.sonicelectronix.com/item_26549_Connects2+CT22SO02.html

If you do not want to buy them you might be able to go to your local car stero installer and ask them if they have the keys to remove the radio that you can barrow for an hour or 2

Good Luck please rate 4 thumbs up and please leave a testimonial.

under plug, remove the plug of radio and the fuse is here

http://www.4shared.com/file/244011115/67794353/CDX-GT400.html

there are differnt settings for each source, go to audio settings when you switch to the differnt modes on your head unit

have your local car audio dealer order one from sony by model number that the fastest way to get one

You can get the manuals here. According to the manual it is a plug in the back.

I have the the sony cdx gt 400 and the manual is of no help but I figured it out. You have two options...option 1 is wait until 1 o'clock and hit the small reset button on the radio behind your detachable face, or option 2 is a even better option. Press and hold the volume button in and options will appear...then by tapping the volume button you will cycle through the various options until you find "clock adjust" then press the small "display" button below the volume knob and also right next to the "source" button...the hour will flash turn the volume knob to desired hour then tap the volume knob or display button and the minutes will flash then turn the volume knob to the desired minutes, and you are done...hopefully this helps

yes you do. go to an electronics store and buy an rca to ipod cable. just hook it up and enjoy. p.s. stay the hell away from fm transmiters. they are all garbage. hope this helps

Press and hold the volume knob to get into the setup menu. Press and release the knob repeatedly until you see "Clock Adj". Push the DISP button, then turn the volume knob to adjust the hours. Push DISP again then turn the knob to adjust minutes. When you're done, press the volume knob again. You can download an owner's manual here: http://esupport.sony.com/US/perl/model-documents.pl?mdl=CDXGT400®ion_id=1