Can anybody point me to a wiring & plug diagram that shows the center dash harness which feeds up to the radio? Audio system was originally a Nakamichi. The "SYSTEM WIRING DIAGRAM" that I located on this site does not show the actual plugs & connectors, it only shows the basic schematic interconnections.

I suspect I have an open conductor(s) someplace.
On the radio plug "A", I do NOT have +12V on either A3 (ACC) or on A4 (+12V all times). Both the 20A and 7.5A fuses upstream are GOOD. The harness has continuity for both conductors between the "A" radio connector and the orange connector below. However, I need a diagram that shows the actual ROUTING from the orange connector back to the fuse-block.

 

Never mind.
I eventually found my "open" circuit and spliced it.
Sorry for wasting forum space.