Rywire RY-B-SUB-EF Chassis Specific Adapter for 88-91 Honda Civic/CRX Si/HF/EX

The Rywire RY-B-SUB-EF is a chassis-specific adapter harness designed for 1988-1991 Honda Civic and CRX Si/HF/EX models. This essential component connects Rywire B-Series and D-Series engine harnesses to the vehicle's interior chassis wiring, enabling a clean and professional engine swap installation.

Key Features:

• Direct plug-and-play connection to factory shock tower plugs on driver side
• Compatible with both Rywire Budget and Mil-Spec tucked engine harnesses
• Works with B-Series, D-Series, F-Series, and H-Series engine swaps
• Eliminates the need for cutting factory chassis wiring
• Allows engine harness reuse across multiple chassis by simply changing adapter
• Features clearly labeled connections for simplified installation
• Made in the USA with quality crimped connectors

This adapter harness bridges the gap between the tucked engine harness and the vehicle's interior wiring, connecting essential circuits for gauges, lights, and other chassis functions. Because Rywire's engine harnesses run directly from engine components to the ECU, this sub-harness provides the necessary interface to maintain proper vehicle operation. The modular design means if you change chassis in the future, you only need to purchase a new chassis adapter rather than an entirely new engine harness.