The 2012 boatmate trailer came with a 5 pin flat connector, and my tow vehicle has a 7 blade connection. I have been using an adapter for 2 years, but it seems to have a bad connection and one of the taillights operates only sporadically. Rather than buy new adapter, I am thinking of just re-wiring with a permanent 7 blade.....anyone else done this and anything to be aware of?

I would assume this is a 10 minute, one-beer kind of job. Thoughts?