My guess is that it's a one-way control - like a remote control, the head unit sends data to the CD. You kinda need an oscilloscope or logic analyzer to watch the signals and make a guess about the voltages the unit uses (I don't know because I don't mess with car stereos). The head unit probably sends data to the CD using a low-speed serial port. You might need to put 3v or 5v across this to prevent a reset. The line above means an inverted signal, so maybe when it's low, it resets. Pin 8 is the Accessory signal - it probably goes high when the unit is turned on. Tie the grounds together, and wire the left and right to the phone plug. Looks like pins 1 and 2 have the right signal. I just found one of these units and wanted to turn it into a home stereo.
0 kommentar(er)
