First off, many Thanx to whatheheck for his ICE/LED threads. Since I am at work before sunrise, and leave after sunset, the lighting mods are something I can definitely appreciate.
The solution to both issues isn't all that elegant, or plug and play for that matter, but it works, and has been working in my fogs for the past 3+ yrs with no issues.
The whole reason the error codes come up is due to the lower resistance of the HID's/LED's, so if you give the computer what it wants, the code will go away. All I did was splice in incandescent light bulbs to give the computer the resistance it needed.
The LED license plate bulb mod is below. The pictures are pretty self explanatory, I just wired in a small wedge bulb above each LED bulb. The wedge bulb is very small, and fits in the spot with room to spare, it also puts out very little heat. The wedge & LED put out less heat combined than the festoon bulb they replaced. The only extra thing I did which is not in the pic is wrap the exposed wire at the base of the bulb with electrical tape.
Thats it, the computer gets the resistance it needs to not trigger the error codes.
The end result.
Now for the HID fogs, Sorry I have no pics, but its cold out, and I dont have access to a hydraulic jack at the moment. The premise is exactly the same, and I used the exact same 194 Wedge bulbs. All the computer needs is the resistance of an incandescent filament.
In the case of the fogs, you need to protect the bulb from the elements, and to keep the connections water tight. I used sidemarker light housings that I had from an old Honda. You can find a ton on Ebay, or any housing at the local autoparts store will work as long as it has the base for the bulb to keep water out.
The bulb base usually has a pair of male connectors that you can buy female ends for that plug right on (like audio speaker connections). I ran a short length of wire off each one and using wire taps, I just tapped into the factory(NOT THE HID) fog light harness before the plug.
So you have 2 wires coming off each bulb housing, and you tap 1 wire into
1 wire of the factory harness, and the other wire from the bulb housing to the other wire on the factory harness.
It doesn't matter which one goes to what wire since these bulbs, unlike the LED's do not have polarity.
Seal the plug bases, and any exposed wire with silicone, electrical tape, or whatever you want, and just repeat this for the other side; thats it.
When your fogs are on, these small lamps will be on as well, but as they are tucked up in the bumper, you should never see them.
My fogs are hooked up like this, and have been for 3+ yrs with no problems, which is why I thought the same concept would work with the LED's.