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If you can get your hands on the Toyota Electronic Wiring Diagrams (TEWD) that diagram is Flyout Page #5.
The tach is it's own issue, can't really tell you what it could be with just "not working"
Headlights are are either the integration or headlight relay or maybe the multi-switch on the column.
Blinkers also run through the flasher circuit. Make sure you have the flasher button installed/plugged in. If it's not the flashers won't work.
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1988 Mk3 Turbo Targa - 17.5psi, 486hp, 494tq.
[img]http://www.**********s.com/supra/rsw_sig_stupidTN.jpg[/img]
Who came up with this 500px wide BS?
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