How To: Auto Fog Lights (Don't Have To Push Button)

menacing_gmc · November 10, 2018

Just tried this with me 2016 Sierra and couldn't get it to work. I checked the diode with the battery so it's not that.

midwestdenaliguy · November 12, 2018

On 11/10/2018 at 5:20 PM, menacing_gmc said:

Just tried this with me 2016 Sierra and couldn't get it to work. I checked the diode with the battery so it's not that.

Post a pic of how you have it hooked up and maybe I can help troubleshoot it.

Dr Awesome · January 20, 2019

My DRLs turn off with the blinker on, so if I go this route I might have the fogs turn off. However, if you tie the DRLs together and run them through a diode to the fogs, then the DRLs should both stay on when you have the blinker on and your fogs will stay on. I'm not sure which side to tie them together on or if the fuse size would have to increase (probably not), but it's an option. If I get time and figure it out I'll post it up here.

caddy247 · July 13

Hello I just

Wanted to use my fog lightswitch to turn on my drl whenever day or night.

does anyone know how I can do this I really would appreciate it.

MikeBMW · July 16

I used an AutoSync by BTDiesel for the mod to have fog lights on with DRLs.
It ain't cheap but it works.
https://www.btdieselworks.com/products/2015-2018-autosync