ZXT_bean Posted September 30, 2013 Share Posted September 30, 2013 I recently acquired a very clean and low mileage KA motor set from a 97' 240sx. Im not here to ask all the noob questions about how to mount it or what driveshaft... ect ect.. But I am asking for some help in the wiring dept. I know wiring up a typical obd1/obd0 swap is very straight forward. Ive done a few. But the engine I happened to buy was from a 97 model year car. What would be the best course to take? Ive heard of a obd2 to obd1 ecu conversion harness that would allow me to retain the 97' dizzy and sensors. But I have been unable to actually find one for sale. The other route ive seen is to use an entire obd1 setup. Dizzy, intake mani w/sensors, harness and ecu. Has anyone done this swap using a newer harness? If you did, was there any sort of security you had to bypass? I know DIYAUTOTUNE offers a PNP ecu, but at $800 id like to explore other options before I have to do that. any help is appreciated. Thanks in advance! Quote Link to comment Share on other sites More sharing options...
ZXT_bean Posted October 2, 2013 Author Share Posted October 2, 2013 no one has any insight to the OBD2 harness huh? Quote Link to comment Share on other sites More sharing options...
BluDestiny Posted October 2, 2013 Share Posted October 2, 2013 Try Zilvia and nissanroadrace. Might even be able to just find a harness Quote Link to comment Share on other sites More sharing options...
ZXT_bean Posted October 3, 2013 Author Share Posted October 3, 2013 basically all the info ive read is just to swap to a S13 harness and dizzy and ecu... so unless I can find info on the OBD2 harness, I guess thats what will happen. Quote Link to comment Share on other sites More sharing options...
Big Ben Posted October 17, 2013 Share Posted October 17, 2013 Did you check Mckinney or wiring specialties? They may have some cheaper plug and play options. It shouldnt have had any theft or security work arounds needed. It may have had a clutch switch/neutral safety switch you may need to fool. Best thing to do is study a wiring diagram, look at the modules it needs to power up and look for power and grounds to the ECU. I have not personally done the swap, but it shouldn't be THAT hard to figure out and really no different than wiring up an OBD1 harness. Quote Link to comment Share on other sites More sharing options...
m1ghtymaxXx Posted October 18, 2013 Share Posted October 18, 2013 Since there's a plug and play option available, I would personally go that route. Do you have any further plans for the motor? KA's take well to boost, it seems like you'd be ahead in time, effort, performance and futureproofing with the MS setup. Quote Link to comment Share on other sites More sharing options...
fast-datsun Posted December 17, 2013 Share Posted December 17, 2013 Yes you can do the OBD II wiring into a z car. If you leaving all the smog sensors wiring not that different as your are only making changes at the F5 plug... be sure to wire in the OBDII test port...... Quote Link to comment Share on other sites More sharing options...
mr jdm Posted December 25, 2013 Share Posted December 25, 2013 I dont understand what you are struggling with?If you have a 1997 KA motor that is complete, you have the complete harness, and the ecu.Plug everything up in, the connector by the ecu that you can not plug into anything on a Z chassisyou will have to cross reference and wire up.This isnt hard, if you want to send me your harness I can do this for 300$ Quote Link to comment Share on other sites More sharing options...
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