Is your MP3 player connected to the 12volts connector in the console, or is it powered with a battery?
Seems like noise coming from the car (electrical system).
One thing you could try is what we call a ground loop isolator, cost around 10$.
This device has two input and two output, left and right RCA connectors.
If the noise doesn't disappear with this, then i would look for another radio...
You will possibly need rca to 1/8" adapters.
By the way welcome to the Club!
Seems like noise coming from the car (electrical system).
One thing you could try is what we call a ground loop isolator, cost around 10$.
This device has two input and two output, left and right RCA connectors.
If the noise doesn't disappear with this, then i would look for another radio...
You will possibly need rca to 1/8" adapters.
By the way welcome to the Club!