Do fog lights need a relay?
Relays are an important component in wiring fog or driving lights with a 30-60A draw. Basically, the relay protects the switch from getting hot and creating unwanted resistance. The low current through the switch triggers the relay to make a higher current connection to the heavy load of the fog lights.
Do you need a switch for fog lights?
When there is fog, you should have your headlights turned on. However, many modern cars come with automatic headlights, which don’t always respond to foggy conditions. You may therefore need to switch them on manually.
What is the difference between running lights and fog lights?
The short answer is safety. The primary difference between fog lights and running lights is color, with the majority of fog lights being yellow. Yellow lights will shine through fog, dust, snow or rain without reflecting off of the rain or snow and blinding other drivers.
Can a fog light be wired with a relay?
Fog light wiring diagram with relay. Failure to do so would cause excessive heat in the wiring and switch and create a risk of fire. Pictured is my wiring diagram for installing two fog lights with fuses a switch and a relay. It is for this reason that we present here the proper way to wire a fog light systems.
Where do I run the ON OFF switch for fog lights?
If you’re adding fog lights to a vehicle not originally equipped with them, you’ll need to start by running the wiring for an on-off switch from under the hood to the inside of the vehicle. The easiest and most direct way to do so is to run the wire through the vehicle’s firewall.
What do I need to install a universal fog light?
Universal fog lights typically come complete with wiring and mounting brackets that can be positioned anywhere. If you’ll be adding them new, a fog light add-on kit is your best bet. In addition to halogen lamps and bulbs, it will include wiring harnesses, relays/fuses, and universal mounting hardware.
What to do if your fog light is failing?
If you suspect that your fog lights, or relays, may be having an issue, have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if the car needs a fog light relay replacement. The most popular service booked by readers of this article is Vehicle Body Electrical and Lighting Inspection.