How to Install an Off Road Fog Light
In order to ensure your safe passage to the hinterlands, it's important to add off-road-caliber fog lights to your vehicle as a safety modification of sorts. You need powerful lights that can truly cut through even the thickest fog so that you won't get lost into the forest or swamp. With that said, you need to first know how to wire these extra lights to your ATV, jeep, or off-road truck.
Difficulty Level: Moderate
What You'll Need
- Off-road light installation kit with relay, switch and fuse
- Miscellaneous standard automotive tools
- Solderless wire connectors and crimping tool
- Output amperage of installed alternator
- Assorted wire ties
- 12-volt electrical tester
- Wiring diagram for the vehicle
Step 1:Calculate the load (the total amperage with all accessories running simultaneously) after determining your alternator's output amperage. Make sure to take into consideration the power consumed by headlights and stereo amplifiers. You can use resources on the Internet or the formula watts ÷ volts = amps.
Step 2:Mount the lights on a sturdy location on your vehicle. Don't tighten the mounting until you're finished with the wiring, though. Some convenient locations for fog light placement include the roof-mounted cargo rack, the push bar, or the bumper. You can hold several lights on the light bar of your roof.
Step 3:Make sure your switch is conveniently located. Make use of the wiring diagram in order to find the wire that connects the vehicle headlights to the high beam switch. Tap into the wire with a solderless connector and link its end up to the power side of the switch.
Step 4:Join one more wire from your switch's ground terminal to a solid metal part underneath your dash. Bond the third wire to the switch's load side, which is typically the center lug. You should feed it through the firewall to get to the engine compartment. Leave out the excess wire for later trimming.
Step 5:Having a lighted toggle switch is particularly convenient when it's dark. Mount your engine compartment relay close to the battery to enable you to make a neat extension for all the required wires.
Step 6:Attach the (typically red) wire to the wires on your lights and the solenoid terminal as specified by the wiring diagram. Connect the wire under the dash to the relay's switch terminal. Join the battery terminal on the relay with the battery, making sure that it's a big enough inline fuse with sufficient largeness to carry the load.
Step 7:Aim your lights as indicated on the instructions while tightening up your mounting hardware. Don't forget to secure new wires to the existing harness under your hood for the sake of cleaning up the installation and the wire ties.
Step 8:Finally, properly aim the lights at the right direction prior to wiring them to your off-road vehicle. Give your jeep, off-road truck, or ATV a test drive in foggy conditions to test out the powerfulness of your fog lights for good measure.
Your fog lights should have sufficient lumens or brightness to pierce through the thickest and whitest of fog so that you can see through such cloudiness. Be warned that improper wiring can damage your system and leave you blind when you need light the most, so if you aren't well-versed enough to do this yourself, then get an experienced mechanic to install the fog lights for you.