Reply to "Where to attach speaker wires MTH Proto 1 Alco"

GerhardtOGR Forum Member DIGITAL SUBSCRIBER

gunrunnerjohn posted:
Where does this connector wire go? It looks like the speaker connection to me. This board layout is different than later PS/1, but the volume control and speaker connections seem logical.

Hi John,

Here is another picture. Those wires go into a harness that goes to the rear trucks.

Could make sense if that’s where it measure the speed to do the rpm adjustment on volume.

The wires cut are not long and I notice some extra solder on the lower side of the circuit board just above where the speaker sits (see photo). Any chance that’s the spot ?

Thanks

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