diagram for 1991 nissan 240sx auto wiring harness O2 sensor, tps, coil etc...

[dmaslack]

Hello everyone. I changed my engine for 1991 240sx and did not keep my original wiring harness only to find out they are different for automatic and standard. I found part of the harness off a 1991 nissan 240sx but it was missing all the wiring that goes to the temp sensor and under the fan shrowd to the coil, O2 sensor etc. Luckily the throddle position sensor plugs were still in tact. I found another half harness from a newer car with all the proper plugs but now need a diagram to figure out where all the black wires go. Looking at the harness there are two black wires with white dots that splice off of the O2 sensor - I have no clue where they should be ending up. Please if anyone has any wiring diagrams for a 1991 Nissan automatic shift only I need a copy you can send them via email to [email protected]

[OutToWinPAHC]

You can download the FSM. Factory service manual. Go back into the 240sx / 180sx / Silvia Forum and click "The ultimate sticky" Click the link for 91-94 Factory service manual and download the "EL" (electrical) section.

Its a PDF file, super easy to use.

[dmaslack]

Thanks alot your the best. BTW do you know whether or not the throttle body is the same on a 91 240sx automatic or standard? I have both throttle position sensors - the automatic has one additional plug . Can I just change the sensor or do i need to change the throttle body as well?