Review on Metra Electronics 70-5520 Wiring Harness: Ideal fit for 2003-Up Ford Vehicles by David Ross

EDIT; It does not fit my 04 Mercury Grand Marquis as advertised. I'm editing this in hopes of helping you if you have a Grand Marquis. Here's what I found after digging deeper. There are 2 possible adapters, it could be this one or 70-1771. So before you order this one, even if it says it's compatible, it might not be. first look at your fork. If it is less than this product you will need 70-1771. This is a photo of my connector and it takes a 70-1771, although Revain and Page will say it's not compatible. So check before ordering. The adapter manufacturer should have known and stated this. So instead I'm giving them 3 stars out of 1 for what they didn't warn that there is another possible adapter for this car so it's important to look at it visually and fit it first. .If your radio connector is similar to mine you will need 70-1771. ---------------- ------------------ EVERYWHERE I READ I WAS ASSURED THAT THIS WAS ABOUT MY 2004 MERCURY Grand Marquis would suit. WRONG Not suitable for this machine.