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Ships within 48 hours · Estimated delivery Aug 9 - Aug 14
6-Mounting Brackets(GM)
We can say with great confidence that all of our advertised gains come from real world “apples to apples” testing – no BS
The headlights will automatically come on at night when headlight switch is left in Auto mode
WILL NOT WORK ON EURO MODELS
BULBS NOT INCLUDED
14-15 Sierra SLT to 16-19 HD Headlight Harness roto fab 6-Mounting Brackets(GM)This is only for OEM headlights not aftermarket headlights. This harness is for those with 2014 and 2015 GMC Sierra SLT models that want to upgrade to the 2016 2019 HD(2500&3500) HID headlights. The 2016 2018 HD headlights look identical to the the 2014 2015 SLT headlights except they utilize a HID bulb for a much brighter and functional look. This harness provides the "clean power" needed to run the GM HID bulbs. For use with these 16 19 HD
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