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Sup , Just wondering if anyone has info on my OBD-0 wire harness. Trying to figure out what my OEM wire codes are. I have the jumpers for OBD-0 to OBD-1 about to do my own harness conversion just not sure what the color codes are. Honda 89 HF. Thanks.

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OBD0 DPFI to MPFI Comparison Pinouts

 

 

DPFI MPFI

Pin# Wire Color Function , Wire Color Function

A1 Yellow 2 Aux Injector , Brown #1 Injector

A2 Black 1 Main Relay/Ground , Black 1 Main Relay/Ground

A3 Yellow 1 Aux Injector , Red #2 Injector

A4 Black 2 Main Relay/Ground , Black 2 Main Relay/Ground

A5 Red 2 Main Injector , Light Blue #3 Injector

A6 Green Purge Cut Off Solenoid Valve (Coil) , Green Purge Cut Off Solenoid Valve (Coil)

A7 Red 1 Main Injector , Yellow 1 #4 Injector

A8 Yellow 3 Sedan LX (A/T only)

A10 Red EGR Solenoid Control Valve (Coil) (A/T only)

A11 Blue/Yellow EACV (Coil) , Blue/Yellow EACV (Coil)

A12 Green/Black 2 Main Relay , Green/Black 2 Main Relay

A13 Yellow/Black 2 Main Relay , Yellow/Black 2 Main Relay/Injector Resistor Box

A14 Green/Black 1 Main Relay , Green/Black 1 Main Relay

A15 Yellow/Black 1 Main Relay , Yellow/Black 1 Main Relay/Injector Resistor Box

A16 Brown/Black Ground , Brown/Black Ground

A17

A18 Black/Red Ground , Black/Red Ground

 

Pin# Wire Color Function Wire Color Function

B1 White/Green Hazard Fuse , White/Green Hazard Fuse

B2 Orange Tandem Control Solenoid Valve , Blue 1 Fast Idle Control Solenoid Valve

B3 Yellow A/C Clutch Relay , Yellow A/C Clutch Relay

B4 Yellow/Green Radiator Fan Relay , Yellow/Green Radiator Fan Relay

B5 White/Yellow Alternator , White/Yellow Alternator

B6 Green/Orange Check Engine Warning Light , Green/Orange Check Engine Warning Light

B7 Green/Orange Position Console Switch (Park, Neutral) , (A/T only)

B8 Blue/Red A/C Switch , Blue/Red A/C Switch

B9

B10 Orange Crank Angle Sensor

B11 Green/Black A/T Shift Position Console Switch (Drive) , (A/T only)

B12 White Crank Angle Sensor

B13 Blue/White Main Relay , Blue/White Main Relay

B14 Blue 2 To Yellow, To Alternator Blue 2 Alternator

B15 White 1 Ignitor Unit White 1 Ignitor Unit

B16 Yellow/Red Speed Sensor Yellow/Red Speed Sensor

B17 White 2 Ignitor Unit White 2 Ignitor Unit

B18

B19 Green/Red Electric Load Detector Green/Red Electric Load Detector

B20 Brown Ignition Timing Adjusting Connector Brown Ignition Timing Adjusting Connector

Pin# Wire Color Function Wire Color Function

C1 Orange Crank Angle Sensor Blue/Green Cylinder Position Sensor

C2 White 4 Crank Angle Sensor Blue/Yellow Cylinder Position Sensor

C3 Orange/Blue TDC Sensor Orange/Blue TDC Sensor

C4 White/Blue TDC Sensor White/Blue TDC Sensor

C5 Red/Yellow TA Sensor Red/Yellow TA Sensor

C6 Red/White 1 TW Sensor Red/White 1 TW Sensor

C7 Red/Blue Throttle (Position) Angle Sensor (TPS) Red/Blue Throttle (Position) Angle Sensor (TPS)

C8 Yellow EGR Lift Valve Sensor

C9 Red/White 2 PA Sensor Red/White 2 PA Sensor

C10 Green/White 3 Brake Switch Green/White 3 Brake Switch

C11 White 1 MAP Sensor White 1 MAP Sensor

C12 Green/White 2 EGR Lift Valve Sensor/Pa Sensor/Ignition Timing Adjusting Connector/TA Sensor/TPS Sensor/TW Sensor Green White 2 Pa Sensor/Ignition Timing Adjusting Connector/TA Sensor/TPS Sensor/TW Sensor

C13 Yellow/White EGR Lift Valve Sensor/Pa Sensor/TPS Sensor Yellow/White Pa Sensor/TPS Sensor

C14 Green/White 1 MAP Sensor Green/White 1 MAP Sensor

C15 Yellow/Red MAP Sensor Yellow/Red MAP Sensor

C16 White 3 O2 Sensor White 3 O2 Sensor

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