92B20GSR

I am doing a b18c1 swap into my 92 dx hatch. if i get a p72 is there any wiring that needs to be done.

Terry.Ho

You shouldn't have too much extra wiring to do since you aren't doing an OBD2 to OBD1 conversion. But maybe this can help.
Good luck

ECU Pinouts


p72_obd1
A1 BRN INJ1 INJ1
A2 YEL INJ4 INJ4
A3 RED INJ2 INJ2
A4 GRN/YEL VTS VTEC solenoid
A5 BLU INJ3 INJ3
A6 ORN/BLK PO2SHTC O2 sensor (heating element)
A7 GRN/BLU FLR1 fuel pump
A8 (empty)
A9 BLK/BLU IACV IAC valve
A10 (empty)
A11 (empty)
A12 GRN FANC engine coolant temp switch
A13 GRN/ORN MIL MIL (check engine light)
A14 (empty)
A15 BLK/RED ACC (a/c compressor clutch)
A16 WHT/GRN ALT C alternator
A17 PNK/BLU IAB IAB Solenoid
A18 (empty)
A19 YEL (AUTO ONLY) (a/t trans only)
A20 RED PCS EVAP purge control solenoid
A21 YEL/GRN ICM ICM
A22 (empty)
A23 BLK PG1 ground
A24 BLK PG2 ground
A25 YEL/BLK IGP2 to main relay and to gound for o
A26 BRN/BLK LG1 gound
B1 YEL/BLK IGP2 to pin A25
B2 BRN/BLK LG2 ground to shields for CYP & TDC
B3 (a/t trans only)
B4 (a/t trans only)
B5 BLU/RED ACS a/c switch
B6 (empty)
B7 (a/t trans only)
B8 GRN PSPSW PSP switch
B9 BLU/WHT STARTER SIGNAL starter signal
B10 ORN VSS vehicle speed sensor
B11 ORN CYP P CYP -P
B12 WHT CYP M CYP -M
B13 ORN/BLU TDC P TDC -P
B14 WHT/BLU TDC M TDC -M
B15 BLU/GRN CKP P CKP -P
B16 BLU/YEL CKP M CKP -M
D1 WHT/BLU VBU Back Up Power
D2 GRN/WHT BKSW brake switch
D3 KS Knock Sensor
D4 BRN/WHT SCS service check connector
D5 (empty)
D6 BLU/BLK VTM VTEC pressure switch
D7 LT BLU TXD/RXD (data link connector)
D8 (empty)
D9 WHT/RED ALT F alternator
D10 GRN/RED ELD electric load detector
D11 RED/BLK TPS TPS Signal
D12 YEL/GRN
D13 RED/WHT ECT ECT sensor
D14 WHT/RED PHO2S O2 sensor
D15 RED/YEL IAT IAT sensor
D16 WHT/BLK VREF VREF
D17 WHT/YEL MAP Map Signal
D18 (a/t trans only)
D19 YEL/WHT VCC1 MAP 5V
D20 YEL/BLU VCC2 TPS 5V
D21 GRN/WHT SG1 MAP GND
D22 GRN/BLU SG2 TPS GND

X2BOARD

Not much wiring to do, you will need to:

*Run the Vtec wires from the engine bay harness to the vtec solenoid and ground.
*Run a wire from the KS to the ecu or the bay harness on the drivers side
*Run a wire from the IAB valve to the ecu

Switch the :
A20 RED PCS EVAP purge control solenoid
to the
A17 PNK/BLU IAB IAB Solenoid
at the ecu if you ran the IAB from the engine to the bay harness, otherwise, connect the IAB to A17

And plug the KS wire to
D3 KS Knock Sensor


I'm tired, so forgive me if I'm off.... btw, are you using the civic harness or the p72 ?

92B20GSR

I am running 92 chasis harness 96 gsr motor harness 96 gsr ecu and jdmhondaparts jumper

salbaje

your obd2 computer will not plug in the obd1 chassis. All 92 civics are prewired for vtec so all you need to add in is knock sensor.

X2BOARD

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by salbaje &raquo;</TD></TR><TR><TD CLASS="quote">your obd2 computer will not plug in the obd1 chassis. All 92 civics are prewired for vtec so all you need to add in is knock sensor. </TD></TR></TABLE>

Yes, you will need an obd1 ecu or a jumper harness to obd2 to use that ecu.

You will also need to add the wiring for the IAB (dual butterflies), but the car will drive properly w/o them... just lacks a lil low end.

92B20GSR

ok i got a jumper harness. What about the secong O2 sensor also im assuming the wiring for the IAB is one wire? Where do i need to run a wire from and too?