So i bought a Raptor grill for my Ford truck like many guys put the grill in. It took a bit, but with the help of YouTube, I got ii. The installs always showed the grill install but not the marker light hookups. So I found many separate videos on how to hook up the lights on my year and model truck, so I went to do it. I quickly found that my light electrical harness didn't match any of these videos, likely because I had factory LED lights, so the harness was different. None of the videos showed what to do in this case. I did know that I did not want to cut up and splice my factory wiring, and honestly, neither should you. Then I found the Starkey video. I ordered the part that matched my truck, which showed up quickly. I pulled off my Air Box and plugged it in as they had said, and it was literally that easy. Don't waste your time cutting up your wiring. Use these adapters. This was money very well spent.