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Obd 1 Ecu And Wiring Questions

Discussion in 'HYBRID -> EG-EK / DC' started by wannaberacer, Apr 13, 2003.

  1. wannaberacer

    wannaberacer Member

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    hey guys,
    I just bought a 95 jdm engine w/a cut harness and no ecu. My question is if I can use a USDM obd1 p72 5-speed ecu?? Or can I only use the JDM obd1 p72 5-speed one??
    Also, since my wiring harness is cut, does anyone know if it connects to the guage cluster??
     
  2. wannaberacer

    wannaberacer Member

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    I forgot to say it's a b18c1 motor.
     
  3. sleeperciv

    sleeperciv Junior Member

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    MORE INFO!!!! what kind of car?

    if it's a 92-95 civic then use the stock civic harness, if it's not a vtec equipped civic just add vtec wires, knock sensor, and 2nd secondaries wire. don't use the jdm ecu because it has shitty programs and has a govnor set about 120 mph or less. just use a usdm p72 obd1 ecu.
     
  4. wannaberacer

    wannaberacer Member

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    well the car I bought is an 89' crx hf. It used to be a 10 sec drag car and had a stand alone engine management system. He parted the rest of the blown motor, trans and management system and left me with a good deal on a car with no wiring what-so-ever! I'm just looking to put it together with a stock b18c for now until I have some money to throw at it. The car has no dash and I was thinking to put a nice set of autometer guages. But, I don't have that kind of money anymore, so I'll swap an integra one or maybe if it works, I'll swap the dash out of my wrecked 944. I just need to know if the wiring harness for the motor plugs into the dash (obd1 gsr). If not, where can I find the dash harness?? Oh, and thanks for answering my question about the ecu thing, really appreciate it!
     
  5. solblu

    solblu Senior Member

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    Well you have a couple options, since you have no wiring at all you could get a harness from a 92-95 Civic and put it in or get a 88-91 harness and convert it to OBD1. Neither will be easy. The 88-91 Civic and CRX harnesses are 2 pieces, an engine harness and a car harness. The 92-95 harness is 3 pieces an engine, dash, and car piece. Just get all the pieces from the same car and you will be ok. I would sugest getting a 88-91 Civic Dx or CRX non Si or HF complete harness and converting it to OBD1. I have a how to for that. Now if you are planning on a custom dash it doesn't change much, the harnesses all do alot more than connect to the dash.
     
  6. wannaberacer

    wannaberacer Member

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    I'm just curious, why wouldn't I get the si wiring harness?? I heard its a lot easier to do a swap with that harness. Also, where can I get some good wiring diagrams?? Help!
    Lastly, I have to apologize. These are probably really common questions, and I know how irritating it must get sometimes when people keep asking the same stuff. But, I don't know much about these cars, I feel like I'm learning to work on a car all over again with this honda. I used to have a 944 and that thing seemed really easy to figure out, I rebuilt the motor, suspension, etc...even worked on em' at a shop. But swapping honda motors seem really difficult, especially in the situation I'm it with the car. Besides figuring the wiring and getting stuff to work I still have to cut the hard-mounted motor mounts and put something together to hold the hasport mounts. So if you guys would be nice enough to help me out I would really appreciate it! :D And thanks!
     
  7. solblu

    solblu Senior Member

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    The DX harness is easier to make OBD1, I have instructions on my site. Contact these guys for a mount kit if you don't already have one http://www.jimfab.com/

    Honda's are pretty simple, and you've got lot's of experience on the net to pull info from.
     
  8. wannaberacer

    wannaberacer Member

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    I'm just curious, the wiring harness hooks up to the motor, ecu and dash and what else?? I need to know every other accessory it needs to hook up to because I'm sure I don't have it and need to buy it (ie turnsignals) :bash: . HELP!
     
  9. solblu

    solblu Senior Member

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    Well everything that's electrical in the car.EVERYTHING.
     
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