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 . Ford Amp Bypass 1994-1997 Eliminates splicing when using Metra part 70-5513 in Ford Premium Sound Systems.