69 Blue Dot Radio - Stereo Adapter?

[KENSTOY1969]

My 69 blue dot stereo radio is only working on the left side.  In reviewing an old wiring diagram for the radio there is a green and green/black wires coming out of the connector where the main power plugs into on the radio.  Per the diagram these wires are supposed to go to a "stero adapter". 

Does anyone have a diagram or can explain where these two wires connect?

[Mark]

Thats the power feed to the multiplex unit mounted up under the dash behind the glove box.

[KENSTOY1969]

Mark - found above the glove box.  Thanks.  Going to replace the Delco DS-501 amplifier and see if that brings the channel alive.

By the way, with a steror radio is there a connection up to the speaker installed in the upper middle of the dash?

[Mark]

Dash speaker is not used (and not even installed) with a Multiplex radio.  The multiplex radios used 2 kick panel and two rear deck speakers only.