You need to replace the whole thing. Not just the bulb. You need to remove the wheels and the wheel well to get to the bumper cover from behind. it's not easy.
To install fog lamps on a 1968 Mustang you will need the following items: 1968 Fog Lamp Wiring Kit C8ZZ-15223-FUD FOG LAMP BAR BRACKETS C8ZZ-15266/7-A FOG LAMP BULB FDU-15220-A FOG LAMP HOUSING ASSEMBLY C8ZZ-15200-AC FOG LAMP SWITCH C8ZZ-15A214-A source: AAPD.net
Here, this will probably help: http://handa-accessories.com/accord/03-2drfoglight.pdf
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To change the fog lamp globe on a BA XR6 Turbo, first, ensure the vehicle is off and the keys are removed. Access the fog lamp by turning the fog lamp housing counterclockwise to remove it from the bumper. Once removed, disconnect the wiring harness and carefully twist the old globe out of the socket. Replace it with a new globe, reassemble the housing, and test the fog lamp before securing everything back in place.
How do you replace the fog lamp bulb on Kia Sedona 2007?Read more: How_do_you_replace_the_fog_lamp_bulb_on_Kia_Sedona_2007
The fog lamp relay is on under the hood and mounted to the driver side wheel well. It's to the left of the washer fluid resevoir, you'll see the wires. The fog lamp relay plugs in on the top.
To change a fog lamp on a Jaguar X-Type, first, locate the fog lamp housing underneath the front bumper. Remove the retaining screws or clips securing the housing, then carefully pull it out. Disconnect the electrical connector from the old lamp, replace it with a new bulb, and reassemble the housing by reversing the removal steps. Finally, test the fog lamp to ensure it's functioning correctly.
The fog lamp cover is custom made. But, you can make one very easily.
check your owner's manual.
DISCLAIMER: I AM NOT RESPONSIBLE FOR YOUR WORK You need several things: -The headlights with fog lights in them (aftermarket or stock replacements). -The Euro switch or equivalent with fog light switch (audi also makes these). -The relay, fuse for the circuit, wires and a black loom to keep the wires neat. -look up a basic diagram on how to wire a vehicle fog lamp.(http://electronics.howstuffworks.com/relay.htm) -Install above