Toyota Supra MKIII Installation Manual

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Wiring Diagram: All connections should be spliced except Sol 1, Sol 2, and Sol L which require the 3 wires to be cut. Wire Color Number Description Black 1 Ground White 2 Manual / Auto Selector (12 volts = man, 0 volts = auto) Red 3 Ignition + Light Blue 4 Sol 1 (ECT ECU Side of cut wire) Tan 5 Sol 2 (ECT ECU Side of cut wire) Yellow 6 Sol L (ECT ECU Side of cut wire) Orange 7 Upshift (12 volts = shift) Light Green 8 Downshift (12 volts = shift) Dark Green 9 Throttle Position (TPS signal wire

 
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