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I have a 2014 Express 1500 AWD that used to be a CenturyLink van. There are a TON of wires in it that may or may not be original, and I've been going crazy trying to figure out wiring diagrams. Yesterday I installed a stereo/carplay system and found these in the space to the right behind the radio. They weren't connected to anything, and I didn't need them to hook up any of the stereo stuff. Can someone tell me what they are for?