Title: Technical Articles: RB20DET/s-chassis wiring reference
KA Chassis
Fuel Pump Relay
Black / Pink stripe
Transmission Neutral Sensor
Green / Orange stripe
ECU Relay
Red / Black stripe
AC Relay
Green / Yellow stripe
ECU Backup Power
Red
Main Ignition Power
Black / Red stripe
ECU Power
Black / White stripe
AC Relay
Blue / Green stripe
Idle Air Control Valve Power
Black / Yellow stripe
Brown (to O2 sensor)
O2 Sensor Power
now that was the chassis interface, here is the dash
Yellow / Red stripe
Tachometer signal
Yellow / Green stripe
Speedometer signal
Orange
Ignition start
Black
Ground
Blue / Green stripe
AC signal
Blue / Black stripe
Water temp signal
RB Engine
White/purple wire
Ignition relay
ECU Pinout:
Vacuum Routing
