Aux cable to factory tape deck

There may be a way, by tapping into the unused CD components on the PCB, but since I could not find an exact schematic diagram, I don't know where they are. If you're a stock-purist, this would be ideal because there's a button for a CD on the radio and a plug in back for expansion; its just unused. I haven't ever used the tape deck for playing a cassette, so this mod was acceptable for me.

I should also note that this mod will feed sound in with the radio, if you dont switch over to tape (either wiring in your own switch or inserting a tape). The radio and AUX play together if you leave it on radio. Unplug aux, and radio plays fine. Switch to tape and AUX plays fine.

 

I noticed in that write up he had to add a switch. Tricking the radio into thinking it had a cassette in it. Did you have to do that to?

edit: after refreshing my browser you answered my question.