More fun with my highly molested 06 XL. My truck has had high end electronics installed prior, was repossessed & sold at auction in Fla. making it's way to a dealer in NC where I bought it.
The radio had no AM and weak FM reception. I opened the dash up to find the antenna cable with a piece of wire taped to the end of it. OK, I pulled the radio (07 factory base line) to see the other end of the wire taped to the back of the radio.
Oh I see what the problem is, I sez to myself, someone snatched the antenna and pulled the cable out so I go pulling on the stump with needle nose pliers, Uh not budging. I look closer and start internet searching to find myself more confused.
The orange antenna cable appears to be what I have seen for 50 years, with a Motorola male end, (which does not plug into the Ford radio).
I would go to the dealer and buy the antenna base and wire. It runs about $20 and then you know its the right wire because its OEM. The install is fairly easy, you just need to loosen the fender near the door and feed the wire through the firewall