Skip the auto shop - Our mechanics make house calls

Q: Fog lights

asked by on

I recently installed my fog lights and instead of installing a fog light switch i wanted to connect the same wiring for my headlights to my fog lights. So when i turn on my head lights i want the fog lights to turn on as well. so is it possible that the headlight switch can also be the switch for the fog lights instead of installing a different switch for the fog light?

My car has 99999 miles.
My car has an automatic transmission.

It is possible, but you will need to wire in a relay and another fuse. The headlight switch and circuit is not designed to carry all that current. By using a relay, a small amount of current will engage the relay and allow a large amount of current to flow through the other contacts on the relay to the fog lights. I suggest doing a bit of research into how to wire a relay to prevent any possible electrical failure. If you still need help with this, a certified technician from YourMechanic can come to your car’s location to diagnose the relevant electrical wiring.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: My 2012 MKZ intermittently makes a high pitched sound that seems to come from the passenger side of the car. It's loud enough that

The brake rotors can get a lot of rust on them from water and road salts that can make the brakes noisey when not pressing the brakes. You can replace the pads and rotors to get rid of the noise...

Q: Car will start and idle but when I give it gas it struggles and almost dies out.

Hello. This can be caused by a number of things. Though most of the time it is caused by a bad air flow sensor. When this sensor does not read correctly this will occur. I usually install a scan tool...

Q: Hello, I have a 2012 jeep compass with engine noise. I inspected it, and it looks to be coming from a pulley. The Crankshaft pulle

There should be no appreciable run-out on the crank pulley and if a physical inspection of the harmonic balancer reveals damage such as a broken, cracked or separated rubber bond, the balancer should be replaced. If you do have a...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...