Yesterday I provided my SC-805 with an AUX input. The soldering of the cable is quite simple. In order to activate the input, you have to connect an MP3 player to the jack cable and start the music. Then press the tape button. As soon as the radio wants to turn the cassette (it is not inserted), press the tape button again. Repeat that until the music starts. The input is activated until you press the eject button or take the radio off the current. If the input is activated, simply plug in the player and press the tape. Playing cassettes is still possible. I built the AUX input into the storage compartment with a small 3.5 jack jack. Also goes with the SC-802. I have the Yatour in with iPod support, but in order to play music over the AUX input, the iPod in the glove compartment must always be deducted because the priority has to be on AUX. I will now add a second jack to the back so that I can play the music with the user.