Skip the auto shop - Our mechanics make house calls

Q: No trailer running lights

asked by on

I am hooking up my 40 ft goodneck trailer to my Dodge, and I’m having a problem. My trailer running lights are not coming on. But I know my trailer is getting power because my signal, break lights and flashers are working on my trailer. I am wondering what the problem could be. Do you have an ideas or answers? Thanks.

A: Hello. The trailer could be wired wrong. It...

Hello. The trailer could be wired wrong. It also could be a blown fuse or relay. There is a running light fuse under the hood and a relay behind the rear bumper. Either one being blown will cause your issue. I suggest that you start by checking those three things. The trailer wiring, fuse under the hood, and the relay behind the bumper. If you need some assistance with these checks, consider enlisting a certified mechanic who can diagnose the issue with your lights and make the necessary repairs.

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: No low beam lights, 2000 Chevrolet Metro

Hello. There could be a problem with the combination switch not turning on the low beams headlight. The combination switch is what turns on the headlights and turns on the high beams. When this switch fails, headlight operation can be...

Q: Installing a backup camera

Hello. If you do not want the warranty voided or extra charges after the lease is up then make sure you only get a surface mount system and do not let any holes be drilled in the car for the...

Q: What is causing my truck to make a grinding noise when I shift it into drive or when I come to a stop

Hi there. If the gears are not engaging and there is a grinding noise, it is commonly due to a front pump failure or main shaft damage inside the transmission. I recommend having a certified technician, such as one from...

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...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...