When replace the OEM radio with an after market radio this harness provides a simply solution to connect the after market radio to the OEM harness. Harness directly plugs into the OEM radio harness . Our harness follows the E.I.A. color code standard so matching the wire to the after market is easy and makes is plug and play. Honda Civic 1996-1998 Keyless Entry Retention Harness Incorporates the factory keyless-entry security system into the aftermarket installation.