Autopapyrus · Hyundai Santa Fe Classic (1st generation)
https://autopapyrus.com/guides/hyundai/santa-fe-classic/fog-light-switch-location-and-wiring/
https://autopapyrus.com/guides/hyundai/santa-fe-classic/fog-light-switch-location-and-wiring/
Compiled automatically from service literature and owner experience. Specs are for the typical configuration — check them against your exact car before you start.
Hyundai Santa Fe Classic (1st generation): Fog Light Switch Location and Wiring
The exact wiring diagram for the 2.7 V6 on this body is not confirmed in open sources, so below is a general principle that suits this car. On trims with fog lights, the control is usually either a button on the panel to the left of the steering column or a rotating ring on the turn signal/light stalk. If the car has no fog lights, the wiring is done through a relay using a standard circuit.
Part
- 🔩 Fog light switch (OE, matching your panel type), fog light relay, and, if the bumper has no wiring, a fog light harness. I am not listing OE part numbers, to avoid giving you a wrong one
Step by step
9 steps- Determine which version you have. If the light stalk has a ring with a fog light symbol, work with that stalk's harness. If the fog lights use a button, look for it on the lower panel to the left of the steering wheel, next to the headlight leveling and instrument illumination buttons. There is often a blank cover there that you can pry out with a thin screwdriver.
- Disconnect the negative battery terminal. Remove the lower trim panel under the steering wheel and, if needed, the steering column cover.
- Pull out the blank cover or the old button. Do not pull on the wires. Look at the connector. If there is one, the harness already has the fog light circuits. If there is no connector, you will have to run the circuit yourself.
- Identify the wire functions with a multimeter, with the ignition on and the parking lights on. You need a wire that has 12 V only when the parking lights are on, a button illumination wire, a ground wire, and a wire to the relay. Wire colors differ between model years, so rely on measurements, not colors.
- Relay circuit. Connect relay terminal 85 to the power that appears with the parking lights (through the button contact). Connect terminal 86 to ground. Connect terminal 30 to constant battery positive through a 10-15 A fuse, installed as close to the battery as possible or in the fuse box. Connect terminal 87 to the wires of both fog lights. Secure the fog light ground to clean bare body metal.
- Wire the button: feed one contact with power from the parking light circuit, and take the signal for the relay coil from the other. Connect the button illumination to the dash illumination wire, and the illumination ground to ground. The current through the button's own contacts should be small, since only the relay carries the load.
- Route the wires to the bumper along the factory harnesses, and use the existing grommet to pass through the firewall. Protect the wires with corrugated loom and zip ties, and keep them away from the exhaust manifold. Insulate all connections with heat-shrink tubing.
- Reconnect the battery, turn on the parking lights, and check the button, both fog lights, and the illumination. Make sure the fog lights do not come on with the parking lights off (if your circuit is meant to work that way). Also check and adjust the fog light aim against a wall: the beam should be below the axis of the low beam.
- Reassemble the panels and make sure no loose wires are left near the pedals and the steering column.
Common mistakes and warnings
- Do not connect fog lights directly through the button without a relay and fuse: this risks overheating the wiring and a fire. On these cars the fuse and relay box is under the dash on the left and in the engine compartment. There may be free slots for fog lights, but check the slot assignments against the label on the box cover of your specific car. If you have no electrical experience, leave the job to an auto electrician.