BB_TX,
Pics posted by RoyB is what I'm talking about. Cover opens sideways, rather up. I put dio grease on trailer plug and as I stated in 1st post, all last winter, no problem. Now when I plug in trailer, the lights don't seem to make full 100% contact. All the pins appear to be okay, NO corrosion or green, but light cord just seems to be a tad sloppy in truck. I understand the cover is to simply hold cord in. May have to do what Wyo Traveler suggested and replace truck plug. Wonder if Ford would do seeing it's still under warranty.