No sound from the speakers, radio and cd seems to run

Possibly, the bundle that goes through the door also have speaker wires in them. Check there.

check your wiring, make sure its not grounded behind the dash somewhere

It sounds like the amp is not functioning on the radio. If you install and after market cd player the radio still won't play because it's the same amp.

Now, if you would change the radio and it still won't play, it sound like it would be the wiring to the speakers. Speakers usually don't burn out, but anything is possible.

I hope this helped.

I had this same problem. After reading other ideas and some trial and error, I finally got it. Most Caravans have an Infinity system (the speaker grill will say Infinity on it) ,which uses an amplifier to run the door and rear speakers. I had to ground the clip wire that was originally attatched to the strap ground on the factory installed radio. Then I also had to hook the wire on the new radio for power antenae (blue and white on my unit) to a blue wire on my new harness. This wire came from the last wire of 7 wire harness that had the other 6 wires for speakers. The original wire appeared to be green/red on my vehicle. After I connected both, the speakers cameon and sound great again.

DOES THE RADIO PLAY? HERE ARE THE FACTORY WIRING COLORS FOR THE RADIO HARNESS, RECHECK YOUR WORK. IF U FIND NOTHING THEN IF THE RADIO PLAYS THE CD PLAYER IS DEFECTIVE, IT HAPPENS BELIEVE ME.

2001 Chrysler 300M Car Stereo Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Pink
Car Radio Accessory Switched 12v+ Wire: Red/White
Car Radio Ground Wire: Chassis or Strap
Car Radio Illumination Wire: N/A
Car Stereo Dimmer Wire: Orange
Car Stereo Antenna Trigger Wire: Orange/Red
Car Stereo Cell Phone Mute Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: Located under the rear deck in the trunk.
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Dark Green
Left Front Speaker Negative Wire (-): Brown/Red
Right Front Speaker Positive Wire (+): Violet
Right Front Speaker Negative Wire (-): Dark Blue/Red
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown/Yellow
Left Rear Speaker Negative Wire (-): Brown/Light Blue
Right Rear Speaker Positive Wire (+): Dark Blue/White
Right Rear Speaker Negative Wire (-): Dark Blue/Orange

the cd player is bad and you can hook up subs through a rca hook up that you can hook to your speaker wires in the trunk the adapter is like 20 bucks at radio shack or local sound installer or buy an after market cd player cause yours will never work again and run rca's off the back of the radio to your trunk

check the wirings of your speakers and then check the settings on your radio.

I’m happy to assist further over the phone at https://www.6ya.com/expert/ramy_d9e7ebea3891f482

Check your radio and trunck to see if you have a equalizer/amplifier built in or otherwise.Adjustments would cause radio to go into safety mode.Try your balance from side to side.A busted speaker would cause the fuzzy sound or a shorting speaker wire.If none of this is your problem you may need to take it to a sound specialist.

I would first check all the wires to your speakers it may just be that. If all seems ok It may just be a defective radio and I would call the make of the radio and see if the radio you have purchased is the problem. I hope tis helps and wish you all the luck. You have a wonderful day.

I disconnected the amp and ran jumper wires between the two harnesses basically creating an amp bypass everything now works fine.