Plug-and-Play. Our headlights are completely plug-and play and will fit perfectly for both halogen and OEM LED models and without any gaps. Adapters are included for OEM halogen models and were designed to plug into your factory headlight connector, with no wiring modifications needed. No errors, flickering, or hyperflashing! A fusebox wire harness is also included to power the running lights, if your truck doesn’t come with daytime running lights (non-DTRL) from the factory.