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 Element 2003-2011 Amp Retention Harness. This harness is for installing an aftermarket radio while keeping the factory amplifier and speakers. Harness will also maintain factory sub and auxiliary input.