Aftermarket radio on but no sound?

It might be defective, here are the radio wiring diagrams so you can double check the installation and see how the system works. I did notice there is an amplifier so the aftermarket radio must be compatible and if not, you will need to wire the speakers up individually. Check out the images (below). Please let us know how it goes.

Yeah, i connected it to a speaker i had and it worked so it’s most definitely the amp because when connected to my car it doesn’t work. Any idea how i can connect it directly to the speakers?

To bypass the amp or? Did the aftermarket radio come with instructions for this? If you want to bypass the amp use the wiring diagrams to connect to the speakers.

Yes, to bypass the amp or anyway to make the sound go to the speakers. Also, is there any stereo that is compatible with the amp of my car?

You will need to search for a radio that has this capability or wire the speakers directly at the amp using the wiring diagrams I have provided.