03 Apr K Swap Harness DIY

By Brian Gillespie

This is how to make a universal K swap universal adapter harness for Hondas that use the main relay that includes both the ECU relay and fuel pump relay in one unit like most of the popular Honda and Acura applications. It will work on all fuel-injected Hondas, which means 1985-2000 Civics, 1986-2001 Integras, 1985-2001 Prelude, 1985-2002 Accord, 1998-2001 CRV, and similar models using Hondata.

Here are the plugs and pin locations:

For a list of tools we use to build this, you can visit our Amazon affiliate link here:
https://www.amazon.com/shop/vtec.academy/list/3QV1EQLQU08A5

For the automotive-grade wire, use this link:
https://4rcustomswire.com

For the C101, water temp, radiator fan switch, air-fuel ratio connectors, and terminals use this link:
https://www.corsa-technic.com

For the ECU E connector and terminals, use this link:
https://www.bmotorsports.com/shop/product_info.php/products_id/3485

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DISCLAIMER:

VTEC Academy videos are for educational and entertainment purposes. We can not guarantee the modifications performed in the video are legal in your locality. Do not do any modifications to your vehicle that will void your warranty or in any way violate your local laws. We assume no liability for property damage or injury as a result of any of the information contained in this video. Use the information provided at your own risk. It’s on you, dog.