So, I have a 2002 Lariat and the fog lights don't work. I checked my fuses and found a 20 amp fuse that was blown. I changed the fuse and my fogs still don't work. I bought new bulbs and still nothing. I read somewhere the fuse is inside the larger fuses under the hood. I don't know I bought the truck in April and I can't figure them out. I don't have a test light to see if I'm getting power. I thought when I found the bad fuse, my problem would be over.

 

Download your manual here
http://www.fleet.ford.com/partsandse...owner-manuals/

 

For whatever reason, the manual won't download. Need more help.

 

Welp time to buy a test light. Pretty cheap at autozone. If all fuses are good both in cab and under hood, and you know you have the correct bulbs and they are working then it's either the plug or the wires. You'll need to find which wire is a problem, either a continuity test or test light should help determine where the problem is. Is your switch working correctly? When you pull out for the fogs, does the fog light emblem illuminate like they should be on?

 

Are you pulling out on the switch to engage the fog light? It isn't just a turn and they are on. You have to pull it out (up) to engage the fogs.

 

In addition to the posts above, your headlight switch has to go all the way to the right (on headlight setting) of the switch, then pull out. It will not pull out on auto light setting, off, or parking light setting, only all the way to the right.

Check that your new fuse isn't blown again, this would mean there's something wrong with the wiring.

If you don't have one, a cheap volt meter will give you a lot of answers. Check for 12v power at the fuse inside the cab, under the hood in the distribution fuses in the black box and at the connector for the fog lights themselves.

IIRC the black box under the hood houses a relay for the fog lights. May wanna buy another relay and replace it. If not you could always switch relays with something that is less important (headlights for instance) and see if because of switching the relay your headlights don't work. If you swap your headlight relay with fog light relay, and your fog lights work but your headlights don't, then its the relay.

 

here is the fuse

 

Thank you F150Screw. I feel pretty stupid,but that's all it was, a turn of the switch. I didn't know the switch pulled out like that. Well, that's why I love having a forum like this. My Expedition didn't have fog lights and I've only had this truck for 5 months. Thanks Again.

 

^^^^ Truth right there ^^^^