Here's what I found when redoing my radio wiring. 1994 Eunos and matched up perfectly. See p8 here:
clubroadster.net/resources/pdfs/93sys.pdfBlue/red - permanent 12v+
Blue/black - ignition 12v+
Red/black - illumination
Light green/yellow - electric aerial
Black (foam) - gnd
Blue/yellow - door speaker right +
Blue - door speaker right -
Red/green - door speaker left +
Red/white - door speaker left -
Blue white - rear speaker right +
Blue/orange - rear speaker right -
Red/yellow - rear speaker left +
Red/blue - rear speaker left -
Hope that helps.
P.s. If you still by any chance have the original loom plugs, just get a loom adapter from Autoleads. £8 we'll spent. I wasn't so lucky... see my build thread on p3.