Lights not working v8-5.4l 1999 brake lights turn signals...

Q: Lights not working

asked by on January 26, 2016

The turn signals, brake lights, and hazard lights don't work.

The fuse for "exterior lighting" is the only thing that all three of these circuits share. If that checks out ok, you might be having different issues. The turn signals and hazard lights do share some wiring. The turn signal switch in your steering column also houses the hazard switch. This combination switch sometimes also houses other switches like the intermittent wipers and the wiper washer. If you have noticed any issues with these or your turn signals not canceling after a turn, then the switch might be failing. Even if these other issues are not resent, the switch could still be faulty. The brake lights work on a completely different circuit. Brake lights usually have a switch under the dash to detect you pressing on the pedal. These switches sometimes fall out of place or simply fail. Your cruise control is also tied to this circuit. If the cruise control doesn’t set, that might be a good place to start looking. Tracing electrical issues like these usually require the use of a wiring diagram and specialized tools like volt meters, test lights that are computer safe, and circuit breakers. I recommend seeking the help of a qualified technician. They will have the proper tools and diagrams needed to properly diagnose your light issues.

Was this answer helpful?
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

intermittent wipers not working and windshield washer not working on 2009 ford expedition

This sort of fault is typically diagnosed using a volt/ohm meter with the factory wiring schematic in hand. The type of circuit interruption involved can vary a lot from something as mundane as a bad ground connection to the more...

I need a diagram to where all the vacuum hoses go on a 2001 ford escape 3.0

Hi Christopher. Thanks for the question today. Unfortunately, we can't help you here, since we can't attach files or images to this platform. You should contact a local Ford dealership service or parts department, as they should be able to...

How can I get in my trunk through the back seat?

Hello. Accessing the trunk from the back seat will require removal of the seat and part of the side panel. If you have the owners manual, it will likely have more information on this. There are a set of screws...

Related articles

The Best Used Cars to Buy for First Time Car Owners
Owning Owning your very first car is an exciting time in a person’s life. Likely you want to put a lot of thought and research into the process to ensure you get something that meets your needs, is fun to...
What Are Lever Switches and How Are They Used in Cars?
Every Every electrical system in your vehicle is controlled by a switch in some way. Power window switches, headlight switches, and turn signal switches all perform an electrical function. When it comes to controlling bigger systems inside your vehicle, they...
A Buyer’s Guide to the 2012 Ford F-150
The The best-selling pickup truck in the US for over 30 years, the Ford F-150 has a lot to offer in reliability, durability, and the features that buyers want in a truck. The 2012 F-150 is not only a tough...