I purchased a used factory radio on ebay from a 2004 ford ranger , it is a 415t18c815ah part number. I saw a guy on you tube swap out his grand marquis radio for the ford ranger one however he only had one plug on his grand marquis harness , mine has three plugs and won't work on the ford ranger radio. The 415t18c815ah ford radio from the ranger is a 6 disc cd in dash unit so I wanted it but is not compatible with my grand marquis. My led is going out on my factory 2004 grand marquis radio and I want a cheap upgrade , does anyone have a suggestion for a radio with the 3 plugs on the back of the unit ? Thanks ..