A relay is basically an electrically operated switch. Instead of your headlight switch directly handling all that power to turn the lights on and off, it uses a small electrical signal to control a separate, more powerful circuit. It takes a small current and uses it to manage a larger current. It's like using a little pebble to flick a much bigger switch. In your vehicle, specifically for headlights, the relay sits between the headlight switch on your dash and the actual headlights themselves. When you flip the switch, it doesn’t send all that juice directly to the bulbs. It sends a signal to the relay, and the relay then closes the circuit for the headlights, letting the full power flow. It handles the heavy lifting, so to speak. You’ll typically find a relay box under the hood, and that’s where these live. These things are important because they protect your wiring and switches. Think of it as a shield. Without a relay, all that high – current power would be running through the dash switch itself, and that could overheat things, cause corrosion, or even start a fire. The relay takes the strain. You’ll notice if a relay goes bad because your headlights might flicker, be dim, or not turn on at all. Sometimes it’s just a click – clack sound from under the hood when you try to use them. You can find replacements for most vehicles pretty easily – Fixparts Online has a good selection, actually – and they’re usually a pretty straightforward swap. Buy risk-free: Relay (MPN 40910) is covered by a 3 year manufacturer guarantee!

About Febi

Ferdinand Bilstein is well known for reliability and is trusted by repair professionals worldwide.

Why Choose Febi?

• Febi parts are made to the same standards as original equipment, so you get reliable quality without the high price. • We offer a huge range of parts – everything from engine components to brake parts and even small wear items – all in one place. • Febi has been around for over 75 years, so we know what mechanics and drivers need to keep vehicles on the road. • You’ll find parts for many different makes and models, including popular European cars, making it easy to find what you need. Drive with confidence – choose Febi parts at FixParts Online.