Car Stereos: USB MP3 Player Connections, sd memory card, fiat car

Question
Dear Sir,
i have USB/SD Memory card MP3 player installed in Primier Padmini Fiat car.It works very fine when Car is not Started,but when i start Engine it does not recognize the USB Drive/SD Card & stops play song.Also make Noise when Radio is On while Driving.
Please suggest me some solution so i can use it while Driving also.
Regards,
Champ  

Answer
Champ,

It sounds like there is a serious wiring mix up.  You should check the wiring to the player.  I would use the same power wires used by the radio, and be sure the ground wire is attached to the car as closely as possible to the player.  Also, how are the speakers wired to the player?  If the speaker wires are spliced into the radio speaker wires, you must be sure the radio and mp3 player are not both on at the same time.  It definitely is a wiring issue that needs to be addressed immediately before electronic damage is done.  Hope this helps, Scott