im diong an engine swap in my 2000 integra gs. im replacing the motor and tranny with a 2000 b18c1 and switching from auto to manual. i need to know what harnesses i need to replace to make it proper and functional, and what other things i may need to be aware of

 

You'll need to wire up VTEC, knock as the IABs if you are using the P72 ECU.

 

thanks for the help. what about going from auto to manual? what changes need to be made in the wiring? is there an adapter or kit for that?

 

there a full write up on here that should help you out

 

the wire for shift solenoid is same for reverse gear sensor no need to do anything there. just plug it in
you can buy a gsr harness or add the vtec and iab wires directly to ecu.

 

i have a 95 cabin harness and 2000 motor/tranny. can i make the 95 harness work if i repin the ecu plug? are there any other major differences i need to worry about?

 

integra and 92-95 civic harness is plug and play at the shock towers no need to repin. Just add the wires that your ecu requires

So are you using obd1 ecu and cabin harness

 

i have an obd2 p72 ecu that came with the swap. im also going from auto to 5spd so i want to put the 95 gsr harness in my 2000 shell. will the 95 cabin harness match up with the 2000 engine harness?

 

The engine harness will plug into your shock tower harness but you'll still need to add the wiring for VTEC solenoid, VTEC pressure switch, IAB's, and knock sensor from the shock tower to the ECU if you use that harness. Also all the OBD2 emissions components involved with that engine and harness won't be on it and you'll throw a plethora of check engine lights using the OBD2 P72 ECU. You'd honestly be better off just using your LS harness and adding the VTEC, knock and IAB wiring separately. Also if you go that route reuse your injectors, alternator and you'll need an OBD2-1 distributor adapter as well.

 

thanks for all the help guys... cant wait to get this wrapped up!