I have power to my 7 prong trailer plug but nothing else works.

What is your question?

I have a 2013 Dodge Journey R/T with a 7 prong trailer plug that no longer works, it's worked since I've owned it but now it doesn't work. When I test it all that I have is power and nothing else.

What makes this problem better or worse?

Nothing

How long has your 2013 Dodge Journey had this problem?

Just noticed it. It worked the last time I had it hooked up to a trailer