Alpine CDA-9851 CD player

Hi, the RCAs in the back are usually outputs, not inputs. The specs on this unit indicate that AUX input is optional. Are the jacks you're using marked AUX input? If yes, what kind of cable are you using to adapt the iPod to the RCAs? If no, you may need to buy an adapter. There is one here: http://www.crutchfield.com/p_500KCA420I/Alpine-KCA-420i.html?search=kca-420i&tp=120
I got this link from the spec sheet here: http://www.crutchfield.com/p_500CDA9851/Alpine-CDA-9851.html?tp=5684
Please let us know if you have more questions, and thanks for using FixYa.

Hello .... your Player show the counter is counting but you don't have any sound .. Check your Main connection between your Radio and your CD deck player it possible your sound terminal connection is unplug due to excessive vibration on a bad driving road

try testing for a bad speaker or shorted speaker wire. if they test good you may have a bad output ic.

Here is a link to the owner's manual for the stereo, which has the wiring connections:
http://a248.e.akamai.net/pix.crutchfield.com/Manuals/500/500CDA9851.PDF

i dont know if its just alpine or what....ive had 2 and both skipped very bad or just wouldnt play burnt disks at all

Definitely possible. To make sure it's not your speakers switch the wiring for them. Basically change it so the side that is working now is connected to the speaker that is not working. If it works then it is your Deck.

you have to switch your decks source to AUX and it should work fine. If not you may have a bum player with a bad input.

the alpine should recognize it as a "changer" when you select the source; ie: radio, CD, changer. Sounds simple, but have you turned up the volume on the iPod?
The Alpine adapter is $100, but works great, you can totally control all your iPods functions, and it displays all song info on the Alpine decks display.

you go to a stereo shop..(walmart autozone etc should also do) buy a mounting kit and a wire harness adapter. The wire colors on the adapter match the wire colors of most aftermarket decks. MAtch the wire colors and connect...make sure to tape wires well as if they touch you rick damage to your deck.. install the mount kit plug in your cd player and slide it in and you are good to go..

If someone tried to steal it maybe they Jolted some of the wires behind the harness or the connection into the harness and when you are driving it loses its connectivity. Check all of the connections in the harness and make sure noone of them feel loose. Just as a test try putting it in another car(if applicable) or bench test it, I.e leave it hooked up directly to the battery for a while playing a cd with a small speaker hooked up to a channel( make sure wires dont cross...!!!!!!) and see if you can replicate the issue. Just some thoughts.