Why do I need a relay for fog lights?

Why do I need a relay for fog lights?

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.

Can leaving car lights on kill your battery?

Even just leaving a door slightly ajar may be enough to cause the internal lights to illuminate – and if you leave your lights on long enough, your car’s battery will be drained. Luckily, this can be easily fixed with a jump-start, and in most cases, your battery will be just fine afterward.

What is the purpose of fog lights on a car?

Fog lamps are intended to provide an adjunct to the low beams. Because fog hovers close to the ground, the lamps are designed to shine down, illuminating the road beneath the fog. The top of the beam is cut off sharply so the light does not shine into the fog and reflect off it.

Can LED headlights cause a fire?

LED lights do not emit light from a vacuum as most other bulb types do. Overheating is one of the reasons a bulb could start a fire, but that is highly unlikely to happen with LED lights. They may feel hot to touch, but they produce light at a significantly lower temperature than other bulbs.

Why won’t my LED fog lights work?

The first thing to check if the LED fog lights don’t work is the fuse box. If not, replace the fuse with a new one that’s exactly the same size. Be sure it’s seated properly. Try the fog lights again to see if they work.

Why is there water in my fog lights?

This mostly happens when there is a crack or an improperly sealed housing. There may be an opening on the back of the housing such as an opened socket that allows moisture to be trapped inside, creating a film of condensation or even a puddle of water gathered at the bottom of the housing.