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This adapter is made to allow the installation of a K-Series engine with the 02-04 K20 engine harness into 88-91 Civic/CRX Si, HF, EX chassis. It will also work perfectly with the Rywire K-Series engine harnesses, both K1 & K2 types.
This wire harness connects your K-Series engine harness to your chassis interior harness while adding the E-plug and all its functions. This harness is primarily made for a K-Pro or a Re-Flashed computer but can be used with a stock RSX computer provided you have bypassed the immobilizers accordingly.
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