I added an aux input to my stock 97 radio Jack 5mm stereo socket audio input tda2822m connecting engineering Audio plug trs connections jack headphone aux input port wiring connector ground wires ring circuitbasics microphone type sleeve left right
audio - Connecting 5 pin 3.5MM Stereo Jack Socket to TDA2822M
Headphone 5mm diagrams hubs wires jacks makezine schematron plugs cord pinout tacoma stack bose henn edgar tankbig
audio - Connecting 5 pin 3.5MM Stereo Jack Socket to TDA2822M
I added an AUX input to my stock 97 radio - 1990 to Present Legacy
dac - sound to voltage - Electrical Engineering Stack Exchange