Metra Reverse Wiring Harness 71-5520 for Select 2003-2004 Ford, Lincoln, Mercury Vehicles Plugs into oem radio Power 4 speakers Compatible with select 1999-up Volvo vehicles 7" Long reverse wiring harness plugs into OEM Radio Includes one 24-Way plug for power and speaker For select 2003-2007 Ford, Lincoln, and Mercury vehicles Harness is designed to plug in the factory radio Can be used to repair a harness where the plugs have been cut off or damaged