I have a 2003 ford ranger that has an old factory radio that I d like to add an aux cord to. The radio only has fm and am stations no cd or cassette player. I do not want to go the route of a FM modulator. I have completely took the radio apart and my initial plan was to solder the left and right wires of the aux cord onto the fm or am outputs. My problem is there is no writing or indicators of what pin is what, it is a very old cheap board. What would be the best way to put in a aux cord to this radio? Thanks!
Read more: How to add an aux cord to a factory fm car radio?
