Pin # Color Function Vehicle Install
1 Red Switched Power (ex. ignition) Cigarette Lighter Power
2 White Wideband Analog Output Option for using with Megasquirt
3 Green RPM Input 0-12v square wave, tach signal ECU 73 (lower) White
4 Orange Boost Sensor Input Only for use with electronic boost controllers
5 EMPTY NOT USED NOT USED
6 Yellow Boost Sensor +5 Power Only for use with electronic boost controllers
7 Black Power Ground Chassis Ground.
8 Brown Sensor Ground (EMS ground reference) ECU White/Black stripe
9 Purple Simultated Narrowband O2 Output (for stock ecu) Only if you removed your regular o2 and replaced it with the wbo2.
10 Grey Throttle Position Sensor ECU 35 (upper) Brown/Red stripe
11 Brown Sensor Ground (Boost Sensor ground reference) Only for use with electronic boost controllers
12 Blue User Input 0-5V Misc Input