I would like to know if an mp3 play can be hooked into this unit

Is the CD player independent of the tuner or is this an all in one unit.

Just plug the cord into the front of the cd player where it says "AUX" and then plug the other end of the cord into the headphone / line out jack on any ipod or mp3 player then select "AUX" instead of CD and the sound will come through the system

The only way to play an mp3 player through this head unit is through an adapter. You will need to go to Best Buy or some electronics store and buy a cd-to-cassette adapter. You just plug the adapter into the mp3 player's headphone jack and insert the cassette into the head unit. Let the cassette play and play your music through the mp3 player and boom, you have a mp3-capable head unit.

the mp3 means that it plays cds burned in mp3 format.

dont know

The songs probably need to be in MP3 format to play.

If your unit has an AUX IN then use that, otherwise you need to utilize the IP Bus system (the place where a CD change would hook up). If that's the case you will need to purchase and adapter from the manufacturer or Crutchfield.com

I’m happy to assist further over the phone at https://www.6ya.com/expert/robert_aad3edb7dfa380b9

HI...
You wont be able to play any new format CDs on an old Fisher or any other older make . It 's the internal decoder logic that's needed. And older players dont have it.
As far as top-loaders..Do a websearch . I dont know of any.

I am having this exact same problem!!! Help!!

lol i had the exact problem that you are having with my alpine. The solution is taking the blue cord that was inside the vehicle (forgot what cord it was) and actually connecting it with the other blue cord thats different makes the factory amp read the cd player and ta-da it works. crazy isn't it