This LED conversion harness is a perfect fit for 2014 - 2020 Toyota Tundra trucks. It's designed to let you upgrade to the latest 2018 OEM LED headlights from Toyota. You won't need to cut, splice, or modify the truck's factory harness. If your Tundra is a Platinum or 1794 edition with OEM LED DRLs, this harness makes it easy to power the new DRL feature. For trucks without OEM LED DRLs, just choose the optional DRL power harness. Connect it to a switched power source like the fuse box and you're set. With this harness, DRLs will always shine at full intensity. It retains 100% of stock functions, keeps the low beam on with the high beam (BI - LED), leaves the stock wiring unmodified, and is a plug - and - play install with no hyperflash. The package includes 1x Morimoto Tundra OEM LED Conversion Harness, an optional 1x Morimoto Adapter, and a 2 - year warranty. Note that since the new headlights use a 7443 front turn signal bulb instead of the original 3157/4157, you'll need to re - pin the connector from your truck. Just swap the purple and black wires for the blinker to work properly.

Using this LED conversion harness for your 2014 - 2020 Toyota Tundra is a breeze. First, if your truck has OEM LED DRLs, simply connect the harness to adapt your wiring for the new DRL feature. If it doesn't, hook up the optional DRL power harness to a switched power source like the fuse box. The install is plug - and - play, so you don't need to do any complex wiring. However, be aware that because the new headlights use a different front turn signal bulb, you'll need to re - pin the connector from your truck. Just swap the purple and black wires. As for maintenance, there's not much to do. Keep the harness clean and check the connections periodically to make sure everything is secure. If you have any issues, refer to the 2 - year warranty for support.