Skip the auto shop - Our mechanics make house calls

Q: Electrical

asked by on

ok i turn the key to the on pos. and my rear taillights all 6 of them flash now if i press break pedal they stop if i press down on signal switch (left turn) just the drivers side flash as they are supossed to. right turn all flash. i just installed air bag suspention could the added amps needed be messing with my electrical system

A: When taillights are behaving inconsistently...

When taillights are behaving inconsistently like you described, it’s likely to be a problem with an electrical ground connection. When the taillights are not properly grounded, the electrical current finds another path, usually through other light bulbs. Since you just did some work on the car, check the area where you were working and look for a ground wire. Those wires tend to be a single wire with a loop on the end. In the process of working on the air bag suspension, it may have been left off when you installed a bolt somewhere. If you don’t find it where you were working, look in the trunk and around the taillights for a wire that is bolted to the body of the car. The surface where it bolts up has to be clean and rust free. Fixing the ground should make everything fall back into line. If you get stuck and can’t find the issue, YourMechanic offers a repair and diagnosis service preformed by a mobile, professional mechanic that will commute to your location to inspect your brake lights.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: What does the Brake light mean on the dash?

There are quite a few important lights on the dash of your car, all of which are designed to provide you with vital information about vehicle systems and their operation. The Brake light on the dash should come on briefly...

Q: heater fan wont work

I recommend you request an electrical diagnostic on the blower motor circuit. It has to be determined if 12 volts is being delivered to the blower motor when the blower motor switch is on, in any or all switch positions....

Q: Brake light on with continual beep

Hi there. The brake light serves several functions. It can come on for the parking brake, low brake fluid, or for the ABS. Make sure the parking brake is off, pick it up with hand or foot to see if...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...