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Jaleco Mega System 1 - Stereo audio switch/pins.

There should be a 2-pin connector labelled CN2 to the left of the JAMMA edge. This is the right channel. The mono audio from the JAMMA edge is left channel.
 
Just to put this to bed, headphone unamplified audio is, from what I could find, only correctly described in the p47 wiring manual.

You would use this for a seperate amp, or phono jack wiring.

You have to tap the jamma edge & the two pin connector. Pin 1 R on the connector Pin 10 L Jamma, and Pin 2 for G Jamma.

Putting this here for future reference.

The above @alamone is 100% correct for amped off pcb audio, thanks.
 

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