14-15 Sierra SLT/Denali to '16-'18 GMC Sierra 1/2 Ton HID Headlight Harness fog lights on but are available as an

but are available as an option thru us

Most Cobra units use a 3

Simply unplug and plug our harness inline and re-connect

Dyno results from many of our customers show 25hp gains with the intake alone

but it also turns on the side markers and dims your LED lamps

14-15 Sierra SLT/Denali to '16-'18 GMC Sierra 1/2 Ton HID Headlight Harness fog lights on but are available as anThis harness is for those with 2014 2015 GMC SLT Denali models that are looking to install the new 2016 2018 1 2 Ton HID headlight. There are 2 version's of the 2016 1 2 Ton headlight. Both utilize the "C" shaped LED, one uses a separate turn signal lamp and the other incorporates the turn signal lamp into the "C" LED. This harness is for the model that uses the separate turn signal lamp. Please see pic's below to make sure you have the right