JDM OBD2 B18C TYPE R into an OBD1 LS Chassis

I am a little confused on what engine harness to use and how to wire it up correctly and what ecu to use. The P73 ecu has a 4 pin connector. My integra only has three connectors running under the passenger dash. Does anyone know why the p73 has 4 connectors?

Any help is greatly appreciated!

 

I think you'll need a OBD2->OBD1 jumper harness. Try http://www.rywire.com

Is the P73 the LS or ITR ECU?

 

so which one should i order the OBD1 to OBD2a ECU Conversion Harness or the OBD1 to OBD2b ECU Conversion Harness? Also wouldn't I still have to wire in the vtec, vtec oil pressure and knock sensor?

 

The reason you have 3 connectors, and the p73 has 4 is because the p73 is an OBD2 ECU.

You will have to use the type r harness and wire up vtec, knock, iabs.

 

I can't use the type r harness because my car is obd1 and the harness is obd2 in fact all type R are obd2 so its not like i can get a obd1 engine harness to work on it, unless a b16 engine harness work on a type R? also what is iabs?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93(Civic)EG6 &raquo;</TD></TR><TR><TD CLASS="quote">I can't use the type r harness because my car is obd1 and the harness is obd2 in fact all type R are obd2 so its not like i can get a obd1 engine harness to work on it, unless a b16 engine harness work on a type R? also what is iabs?</TD></TR></TABLE>

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