So I ordered, and anxiously awaited, the delivery of my LED side marker lights. When I received them, there are NO instructions. I called Dynacorn and they have no instructions. I contact CARID and was told "it is plug and play". Does THIS look like plug and play??????? In my experience, "plug and play" is when you take something out of the package and plug it right in. No connection other than that needed. I have contacted their customer service (supposed technical support) twice and was told this. I was told not to cut any wires and splice together. What is the brown piece for? What is the heat shrink butt connector for? I understand the ground (or assume it is a ground - no directions). THEN, I have to send via email a picture "of the problem" and my VIN to make sure it is for my truck?!?! The tag even says it covers my truck as does their website and I am more than certain I know the make model and year of my truck and order appropriate parts. Also ask them about the wiring. It comes with red & black. My truck is black and blue. So, black to black? Never received a clear answer. Love the lights, hope they work, but Customer service has been a little on the snotty side.