I have a new car with a good stereo system in it but it doesn't have the preamp outputs for the rca cables is there another way to hook my amp and subwoofers up to my stereo? If so how can go about doing it.

You can buy a block that ties into the highside of your rear radio speakers. And the other side of the block has rca plugs for your amp.. ;D

I have a new car with a good stereo system in it but it doesnt have the preamp outputs for the rca cables is there another way to hook my amp and subwoofers up to my stereo? If so how can go about doing it.
You can buy a thing called a step down, they run form about $25 to $75