Thought I would share my experience installing the OEM fog lights into a 2009 Sonata that didn’t come factory with them. According to Hmaservice, it looks like the vehicle wiring is the same for the 06-08 Sonatas, so this how to most likely applies to those owners as well (of course you will need different fog lights, and maybe the switch part# is different).
I did use the OEM parts but made my own circuit. The way I did it, the fog lights will turn on when you turn the fog switch as long as at least the parking lights are on. That means you can have the fog lights on without the headlights (but must have parking lights on), with headlights, and with high beams.
Also when you turn on the fog lights the fog light indicator in the cluster will light up just like factory.
I have not covered every single detail in this how to so you need to use some common knowledge/sense. Not to be mean, but if you are someone who needs an exact step-by-step guide listing every detail like what bolt to remove or what screw etc., then you should not attempt this install. How to disassemble various parts, connector diagrams, schematics, etc., can be found at www.hmaservice.com
* OEM Fog lights – Part #’s: 92202-3k500 and 92201-3k500. (I bought my fog lights on ebay from kdmguy- also known as seoulfulracing.com * in Korea. The pair of fog lights cost me $84 shipped to my door. It took exactly 10 business days to get them.)
* OEM Fog/Light switch – Part #: 93410-3k520
* Fog light relay (This is already installed in the main fuse box, just remove it)
* 16-18ga wire (get like a couple 30-50Ft spools)
* 2 x 880/881 fog light connectors (from ebay or go to any junkyard)
* 1 x 560 Ohm 1/2Watt resistor
* 4 x Female spade connectors
* 2 x T-Taps
* 2 x Ring terminals
1. Remove front bumper cover.
2. Remove fog hole covers and install new fog light in place.
3. Make the fog light wiring so that you have 1 positive wire and 1 negative wire.
4. Put bumper cover back on and route the wiring up to fuse engine compartment.
5. Attach a ring terminal to the neg. wire and ground it to metal. Attach a female spade connector to the positive wire.
6. Remove lower and upper steering column covers. Remove old headlight switch (just depress the tab and pull it out) Install new Fog/headlight switch.
7. Cut blue wire #12 at light switch connector (This is the fog switch signal). Crimp or solder some wire to it and route it through the firewall in to the engine bay. Attach a female spade at the end of new wire.
8. Cut blue wire #13 at light switch connector (This is the fog switch signal ground). Crimp or solder some wire to it. Attach a ring terminal to the end of new wire and ground it somewhere to metal.
9. Unplug gray connector at top of driver’s side kick-panel. Cut the red wire #14 (This is to light up the fog light icon in cluster). Crimp or solder some wire to it with a 560-Ohm 1/2Watt resistor (Just in case the fog led in cluster doesn’t have a resistor already) and route it through the firewall in to the engine bay. Plug the gray connector back in.
10. Locate the wiring harness plug that goes to the driver’s side headlight. Attach a T-Tap with some new wire to the blue/orange wire (parking light). Connect a female spade at the end of new wire. (This is so that the fog lights only turn on as long as the parking lights are at least on).
11. Attach some new wire to the factory 15A fog light fuse in the engine compartment fuse box. Attach a female spade to end of new wire (This will be our main 12V for the relay).
12. Now you are ready to connect all the wires to the relay. The relay has 4 terminals. They are numbered 85, 86, 87, and 30. Written below is where all the female spades go to their appropriate terminal on the relay:
85 – Connect wire coming from the T-Tap we attached to the parking light wire
86 – Connect wire coming from fog light switch.
87 – Connect the pos. wire coming from the fog lights
30 – Connect the wire coming from the 15A fuse in the engine compartment fuse box.
13. The last thing you need to do is connect the wire we made for the fog light indicator led. Just use a T-Tap to connect that wire to the positive wire going to the fog light.
14. That’s it! Now you have the OEM Fog Lights installed like factory! Also you can either make a little waterproof box for the relay or tape it up with electrical tape when you are done and neatly tuck everything away.
Pics of the install:
[b]Back of bumper cover
[b]Fog light hole covers. There are only 3 screw. You'll need one more screw to install fog light(If you want it prefect)
[b]Foglight installed in bumper
[b]You'll need this type of connector to plug into fog light. I got mine of a Dodge Neon.
[b]Made my own fog light harness
[b]Neatly zip tied the wiring
[b]This is the headlight/fog switch harness
[b]Wires #12 & #13. These are the fog switch signal and ground.
[b]The white wire is attached to fog switch signal and goes through firewall. The red wire is grounded to the metal.
[b]This is the gray plug where you have the red wire which lights up the fog led in the cluster.
[b]The red wire you need to cut. Connect a resistor and some wire and run throught firewall. T-tap to fog light pos. wire.