I have a AM/FM radio board I found and am trying get playing through a small speaker. The other components were missing so I don't know how this connects to the rest of the system which had a CD player, tape deck and the like.
The board has a single set of input wires pictured below.
The on board chip is a Toshiba TA8167N which I have found runs on 3 volts and have managed to power. Now I am trying to figure out what is required to connect to the speaker.
As there is only a single out for L and R which connect to the 'R-Out' and 'L-Out' pins on the chip I'm not sure how to complete the circuit. From reading around it looks like I need an 'R-Ret' and 'L-Ret' respectively to complete it but there is no wiring for this available.
I think SL connects to the Stereo LED but I can't follow the MO or MU to the chip as the connections sit under the tuning wheel.
PCB picture added.