16-18 Sierra Dimming LED Override Harness lights Dyno results from many of

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

Available in blue

After removing the bumper the headlamps are simply held in with the 2 mounting bolts on the top tab

Bulbs are not included

16-18 Sierra Dimming LED Override Harness lights Dyno results from many ofThis is only for OEM headlights not aftermarket headlights. This harness is for those with 2016 2018 GMC half ton Sierra SLT's and Denali's that use the below pictured headlight. This harness will keep the LED bright at night instead of going dim. This harness simply plugs inline with each headlight, no added fuses or tapping is required. This harness will not work on the non SLT headlight. PLEASE PROVIDE YOUR VIN # AT CHECKOUT AND WE WILL VERIFY THE