Well im getting into my SR Swap I almost have the stock KA-E engine out of my 1990 240sx. My question is.. I know you have to connect a couple wires from each harness togethor, But what should you do with the rest of the harness?? Just cut it out? Im know a lil about wiring from installing audio systems, but this is sort of perplexing. Can anyone help? Thanks-Drew

 

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srswap.com is good

 

u want to just fully disconnect ur KA harness and then pull the engine put the sr in with the harness attcahed and then start cutting off the plugs (behind battery), and wire (o2 sensor, MAFS) you will need. Splice them on using faqs u find online i personally used heavythrottle.com 's faq, but that is because i cant read schematics yet