Success.
My friend came over to help me out. He too was confused so he started at the receptacle and unplugged and plugged everything he could find. He then went to the front and started moving cables around trying to locate the back of the fuse. He said he felt (not heard) a click, I tested the plug and it was hot.
I had him move the cabling around to make sure whatever clicked, stayed clicked. After a few minutes he was satisfied it was not going to come undone. It sounds to me like the small blade these fuses use just snap into place and this one was not snapped completely from the factory.
I had him pull the fuse (circled in photo above) and it went dead and re-plug the fuse and its hot again. I am guessing my situation is the odd one out but coupled with the correct information above would provide an unlikely but possible solution to a dead trailer plug.
Thanks to all that had input, you really had the solution for 999 of 1000 problems like this. You guys really saved my bacon. The power chair will make getting around a lot easier. But you can bet your a$$ I will pick up a couple of those fuses just in case, I could see that being an issue in the future.