Wiring OB1 car to OBD2 engine harness
Thread Starter
Honda-Tech Member
Joined: Oct 2002
Posts: 104
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From: Tallahassee/FSU, Florida
As the topic says, what do I do. I have a 95 accord EX manual mounting up to a 98 prelude. I will be using my tranny from the accord and the accord ECU POA, but that shouldn't matter, since the pinouts should be the same on all OBD1 ECU's.
The thing is, my ecu harness on the accord has 3 gray connectors, while the prelude engine harness has 4..... why is there an extra plug?! I know the prelude has more sensors being it OBD2.....
On the engine, do I use my accord harness? If so, what about the extra sensors that the harness will not mount up to? Please help!!
The thing is, my ecu harness on the accord has 3 gray connectors, while the prelude engine harness has 4..... why is there an extra plug?! I know the prelude has more sensors being it OBD2.....
On the engine, do I use my accord harness? If so, what about the extra sensors that the harness will not mount up to? Please help!!
As the topic says, what do I do. I have a 95 accord EX manual mounting up to a 98 prelude. I will be using my tranny from the accord and the accord ECU POA, but that shouldn't matter, since the pinouts should be the same on all OBD1 ECU's.
The thing is, my ecu harness on the accord has 3 gray connectors, while the prelude engine harness has 4..... why is there an extra plug?! I know the prelude has more sensors being it OBD2.....
On the engine, do I use my accord harness? If so, what about the extra sensors that the harness will not mount up to? Please help!!
The thing is, my ecu harness on the accord has 3 gray connectors, while the prelude engine harness has 4..... why is there an extra plug?! I know the prelude has more sensors being it OBD2.....
On the engine, do I use my accord harness? If so, what about the extra sensors that the harness will not mount up to? Please help!!
You have a 95 EX accord that you're dropping an '98 H22 engine into ? correct?
if so, (for example) this should be on the same scale as putting an OBD2 B-series engine into a 92-95 civic. You would just use the OBD2 H22 engine harness, plug in all necessary plugs, and leave the extra OBD2 plugs unplugged/dormant (hangin there); and since you'd be using an OBD1 ecu, it will not look for the extra OBD2 sensors.
HTH if any...
[Modified by Katman, 12:44 PM 10/19/2002]
Thread Starter
Honda-Tech Member
Joined: Oct 2002
Posts: 104
Likes: 0
From: Tallahassee/FSU, Florida
Thanks man, gonna try it and see what happens.... If you think of anything I need to do, please post it.
Would it matter if the prelude tranny was SS? So the 2 blue connectors would be hanging there also?
Also, thanks for replying... I post this on various boards, and they had no clue....
Would it matter if the prelude tranny was SS? So the 2 blue connectors would be hanging there also?
Also, thanks for replying... I post this on various boards, and they had no clue....
Thanks man, gonna try it and see what happens.... If you think of anything I need to do, please post it.
Would it matter if the prelude tranny was SS? So the 2 blue connectors would be hanging there also?
Also, thanks for replying... I post this on various boards, and they had no clue....
Would it matter if the prelude tranny was SS? So the 2 blue connectors would be hanging there also?
Also, thanks for replying... I post this on various boards, and they had no clue....
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