In this write-up, we go over the process of installing StangMods’ HID foglight kit in your 2010-2011 Mustang GT.
The fog kit needs no wiring harness and uses the factory wiring harness plugs to get power to the ballasts. As you can see with the grill installed there is very little space behind the grill. It’s not possible to do this install without removing the grill. Removing the grill is the most difficult part of installing this HID kit. You have to remove two bolts that hold the grill on and then pop the grill loose from the retailing tabs all around the grill. Take care to not scratch your paint during the removal process.
Once the grill is removed, you can access the bulbs easily. You need to twist and remove the factory bulbs from the housing of the fogs and then install the HID bulbs into the housing by pressing them into the opening and twisting to lock. The HID bulbs again have a black and red wire coming off for connecting to the ballast.
Once you have the bulbs installed, you are ready to install the ballasts for your fog lights and connect the wires. The factory connector to the fog light plug connects to one of the connectors running off the ballast. This is the only confusing part of the install. The factory harness for each of the fogs has two different colored wires. On each side, the power wire is different color than the ground wire is. You have to be sure that the ground wire of the factory plug is aligned with the side of the HID harness that has the black ground wire. In my case, the ground wire was a grayish color with a yellow stripe. If you hook this backwards, the HID fog lights will not work. Be sure you test the fogs to ensure they work before you reinstall the grill.
The installation for both the right and left fog lights is the exact same. All of the connectors except the one where the factory fog light harness plugs in that I just mentioned are keyed. The other wiring connections can’t be installed wrong. Once you get the ballasts hooked up and the fogs work you can route the wires and reinstall the grill. I pushed the wires though a small opening between the radiator and the headlight assembly rather than wire the ballasts inside the radiator area. You can put the ballasts wherever the will safely fit and be secure.
After installing the wires, reinstalling the grill, and securing the ballast you are ready to reconnect the battery, put the radiator cover back on and you are done. The lights look really good and have lots more light than the factory halogen bulbs. Keep in mind when you look at the before and after photos below that my headlights and fogs are blackout tinted.
You’ll notice the HIDs provide a crisper, cooler-white light that makes night time driving safer and aesthetically pleasing.