I have a 2014 RT Plus and I had upgraded my bulbs to LEDs that were brighter. I noticed the other day that my driver side rear qtr. light was very dim. Tonight I took it out to change the bulb and found that the whole entire socket was rusty orange and corroded. It appears that the rear tires are able to kick up enough water from underneath to create a problem. The first fix I did tonight was to spray some WD40 and wire brush the contact points and installed a new bulb. Its working now but I have to later check the other side. It looks bad enough that in the near future I'm going to have to replace the whole socket.