does anyone have any idea how to put an after market stereo system in a Toyota Prius?

You're out of luck.

As another answer that you received mentioned, you can add other equipment and/or switch the speakers to your heart's content. But if you swap-out the head unit to an after-market product, you'll lose the touch screen functionality.

Presuming that you're talking about current models of the Prius, you can add a satellite radio receiver. That will hook into the existing system, and you can use the touchscreen for that also. Most models also include an input jack for MP3 players and the like, but you don't have the ability to control the player through the touch screen.

particular you are able to, there are constantly automobile audio areas for any automobile. All you ought to do is locate out what length audio equipment are on your automobile and purchase new ones that adventure. determine you examine front and rear audio equipment because of the fact length varies. additionally the amp ought to extra effective be left for extremely useful audio equipment or a subwoofer equipment. determine you disconnect your inventory amp. in case you put in an oem one. in basic terms run sign cables from the inventory deck to the hot audio equipment and the potential cables to the amp. finally, put in a potential cable for the amp to the battery and a distant-on cord to the deck(headunit). go searching you will locate something!

Are you looking into adding amplifiers or replacing speakers? You can add amplifiers by using a sound system interface, like this one:

http://www.crutchfield.com/S-C5QKeTqRZen/cgi-bin/P...