Sc400 Head Unit

[lexussc400help]

Is there anyone out there who knows how to install a head unit in a 92 Sc400 with the nakamichi system?

[PIONEERSUBY]

conversion to nakamichi radio (n104)from the non cd button radio in 1992 not very doable. every other nakamichi converesion is easy to do. especially ls400 and gs300 conversions easy to do. conversion of sc400 with pioneer system cd changer radio(p6800) only needs lengthing the subwoofer amp wiring and connector. but the tape only radio of 92 sc (p1600)has no wiring to the trunk except subwoofer amp so cant be easily converted to nakamichi.