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Doohickie -> RE: Fog lights (7/17/2007 11:34:00 AM)
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Are you in the U.S.? If so, you can access the schematics through Hyundai. I can help you with that. If not, let me know and I can proably dig up the information and get it to you. I did pretty much the same thing with my Elantra. Make sure you run the fogs on their own fuse so you don't overload an existing circuit, and turn them on and off with a relay that is energized according to the conditions you want. On my car, whenever the ignition is in ON or START, the relay coil is energized, and I can turn on the fog lights whenever I want with a switch.... but when I shut off the car, the fogs shut off too without having to turn the switch off. I also put another relay in to interrupt power when my high beams come on, since having high beams and fogs on at the same time are illegal here. The relay coils draw very little current, so you can drive them off the existing circuits, but the main fog light power that is switched by the relay needs to be a high current source.
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