Hi! I also have a sony cdx-5290.it was given to me by my brother in law.his car was given to the charity(salvation army) he took out the car stereo and just cut the wiring harness.now, my problem is i dont know how to connect the radio to my car, will you be kind enough to email me the wiring diagram of the stero(sony cdx-5920).i will appreciate it very much if you will,thank you very much. - Nel