www.jsamotors.com

ST205

These scans are from the manual for export spec models (NOTE:  if they don't come out right click and "save target as").

ECU/Power Source diagrams   Diag 1 (154K)       Diag 2 (176K)        Diag 3 (140K)

Engine bay plug locations   Diag 1 (168K)       Diag 2 (144K)       Diag 3 (73K)        Diag 4 (114K)

SW20

Here are scans from the Japanese wiring diagram for the SW20.  They are reasonably large,  so be warned!

I'll assume you have some knowledge of Toyota wiring diagrams.  These are in Japanese,  but use the same format.

Series II-IV 3S-GE

Engine bay plug locations   Diag 1 (309K)       Diag 2 (327K)

EFI Schematic   Diag 3 (270K)      Diag 4 (138K)

Series II-V 3S-GTE

Engine bay plug locations   Diag 5 (325K)       Diag 6 (311K)

EFI Schematic   Diag 7 (284K)      Diag 8 (220K)

General

Ignition   Diag 9 (135K)

Information Source: gtfour.supras.org.nz/diagrams.htm