19-23 Sierra Fog Light Always On Harness

THIS HARNESS IS NOT FOR CUSTOMERS LOOKING TO ADD FOG LIGHTS TO THEIR VEHICLE, IT IS ONLY FOR THOSE THAT ALREADY HAVE FACTORY INSTALLED FOG LIGHTS.

 has developed this fog lamp harness which will allow for your fog lamps to automatically come on at night without having to use your switch, they will also remain on with your high beams.  Fog lamps will not be on during the day, only at night.  With this harness installed your fog light switch will no longer control your fog lights at night. This harness is a plug and play harness that utilizes GM sealed connectors.  

IF YOU NEED TO ADD FOG LIGHTS TO YOUR VEHICLE PLEASE SEE PART # 250500.

ALSO THIS HARNESS WILL NOT WORK ON TRUCKS THAT HAVE THE ACCESSORY GM FOG LIGHT KIT ADDED AT THE DEALER.  IF UNSURE IF YOUR TRUCK CAME WITH THEM FROM THE FACTORY OR IF THEY WERE DEALER INSTALLED PLEASE CONTACT US WITH YOUR VIN# PRIOR TO ORDERING.

Fits

2019-2022 New Body 1500 Sierra Models with factory installed fog lights

2020-2023 New Body HD models with factory installed fog lights.

WILL NOT FIT 2022 REFRESH MODELS

Installation: 

Harness simply plugs inline with the passenger side headlight main connector.  Easiest way to access this plug is to remove the front mounting screws from the passenger side wheel well, once that is out of the way you will see the 8 pin connector on the back of the headlight assembly.  Remove the connector and plug our harness inline and re-connect.  The other part of the connector connects inline at the body to bumper harness., which is located right above the passenger side fog light assembly.   Relay can be mounted to a suitable location under the hood, you want to make sure it is mounted to a location where it will not get constant exposure to water and please mount with the wires facing downwards to prevent any water from possibly entering the relay assembly.  The ring terminal wire connects to battery positive.