Q: Lights/ brights won't come on

asked by on

I have after market lights on my truck. When I turn my lights on the outside light light up and when I flip my brights switch the inside lights light up. The aren't very bright and it is sometime difficult to see at night. What could be causing my brights not to work and what can I do to fix this?

My car has 200428 miles.
My car has an automatic transmission.

A: Anytime you add aftermarket components, you...

Anytime you add aftermarket components, you have now become the engineer. There is only so much I can do to help you is such a situation because you have now made changes I cannot see, test, or reference from experience from another car. Your car is now unique and I have no way of knowing what kind of system you have installed and how it has been installed. Normally, I can reference factory information. I can't do that in this case.

With that said, I can give you some guidance. Number one, you need an accurate wiring diagram of the lighting system for your truck. Study it and the wires that you have tapped into to install your aftermarket system. Clearly, you have tapped into the wrong wires. For now, I would not use your bright lights. I assume your low beams are still bright enough to drive based on your description above. The only thing that should change when you switch to high beams is the path that electricity takes to your headlights.

If you decide to get some help with this, consider YourMechanic, as a certified professional can come to to your home or office to diagnose the issue with your lights and help you fix it accordingly.

Good luck! I hope this is 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・Save up to 30%

Get a quote

What others are asking

Q: Dashboard lights on, car runs fine

These lights on together indicate there is a problem in the anti-lock braking/stability control system. This could be anything from a failed sensor to a faulty module. The first thing to do is retrieve the diagnostic trouble codes (DTCs) associated...

Q: New clutch but vehicle just revs when put into gear

Hey there. The clutch is self-adjusting and after service the pedal should be pressed five times to set the pedal free travel. If the clutch still does not engage then you may have a defective clutch pressure plate if the...

Q: 105k miles on the chassis AWD model Starting Issues

I would verify that the battery is fully charged and that the terminals are clean and tight. I have seen people forget to remove the plastic protective cap on the battery terminals, too. Corrosion on the cable ends or battery...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.