Add Fog Lights to a 2009 Sierra 2500hd WT

[Meg Bellacook]

I have an urge to add fog lights to my truck. They weren’t standard on this model. Please someone tell me exactly what items I need to do this. The cut outs are in the bumper already. So, wiring, relay, harnesses, etc? I already swapped out the left side driver panel to put in a DIC. The new panel already had the fog light switch, so I don’t need that. I’m hoping to piece together a kit as I don’t want to shell out $400+ from the local dealer, who I can’t stand. Our salvage system here is horrible for responses, so haven’t even attempted that route. Any direct assistance is greatly appreciated! If you have links to items, even better! Thanks,

[davester]

Maybe start with perusing online parts diagrams for your truck, at least for the lights/brackets for mouting the lights up front, and connectors.

 

However, it would not surprise me if, after isntalling everything, and wiring the switch and lights up to their stock location, the bcm also has to be reprogrammed for the fog lights to work (and for the light on the instrument panel, if it has one, to turn on/off properly).

 

If you don't get other help and/or can't find the answer by googling, you might consider skipping the time/expense of hooking it up the oem way and just wiring the lights up directly (well, via a fuse/relay), or testing that wherever the fog lights get their power/ground from, gets power/ground appropriately when the button is pushed.

[David89GMC]

An AllData subscription would be a good start. eTrailer might be a good source as well.

[Meg Bellacook]

Thanks for that! I’ve googled plenty but keep getting hung up on what exactly I need. Some say relay, some say no relay, but need wiring harness, switch, and light assemblies (of course). This is a new project for me as I haven’t done anything with lights yet. Mostly mechanical stuff. I think I may be getting mixed info between those people who are just replacing their existing fogs, so the initial step of ensuring all the needed components are present, is where I need to be. So that’s why I came here!  

[C/K Man]

There was a kit available at the dealer that had everything you needed to install.  Lights, harness, headlight switch and instructions.  The relay and dash harness should be in the truck already.