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Why won't my brake lights work when my headlights are on…

Customer Question
Why won't my brake lights...
Why won't my brake lights work when my headlights are on for my 2002 grand jeep lardo
Submitted: 2 years ago.Category: Jeep
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Customer reply replied 2 years ago
When my headlights are off I have 1 brake light on driver side when there on I don't have no Brake lights at all but do have 1 running light on passenger side
Answered in 9 minutes by:
2/24/2016
Jeep Mechanic: Lou P., ASE Certified Technician replied 2 years ago
Lou P.
Lou P., ASE Certified Technician
Category: Jeep
Satisfied Customers: 5,864
Experience: I Have knowledge in almost all car lines and can help with general questions and more!!!!!
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Hello, sounds to me like there is a ground issue, BUT have you checked the bulbs first to make sure they were not burnt?

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Customer reply replied 2 years ago
I checked all bulbs the 1 at the top of hatch is blown the others r good
Jeep Mechanic: Lou P., ASE Certified Technician replied 2 years ago

ok, did you check resistance to ground on the socket to see if you had a good ground? how good are you at electrical?

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Customer reply replied 2 years ago
I honestly don't kno what I'm doing I'm so how do I check the resistance
Jeep Mechanic: Lou P., ASE Certified Technician replied 2 years ago

ok, give me a moment , let me check a wiring diagram.

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Customer reply replied 2 years ago
Anything yet
Jeep Mechanic: Lou P., ASE Certified Technician replied 2 years ago

Ok so on each brake light socket there is a white wire with a tan stripe. That wire should have power when pressing the brakes. Check to see if it does.

SORRY I thought that message came through !

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Jeep Mechanic: Lou P., ASE Certified Technician replied 2 years ago

any thing yet? did you test those wires?

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Customer reply replied 2 years ago
No checking today
Jeep Mechanic: Lou P., ASE Certified Technician replied 2 years ago

ok, just wanted to let you know i am here when you are ready and i did not forget about you. Lou

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Customer reply replied 2 years ago
Thanks I'll hit u when I check it out and just to let u kno I put a blub in the middle hatch uptop and my running lights came on but when I press the brakes just the middle gets bright and the driver side brake light goes out when I press brakes
Jeep Mechanic: Lou P., ASE Certified Technician replied 2 years ago

ok that usually indicates a bad ground signal, so we start by testing for the power signals then we will move to the ground . and i appreciate the info, the more the merrier.

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Customer reply replied 2 years ago
Ok I'll let u kno when I check them
Jeep Mechanic: Lou P., ASE Certified Technician replied 2 years ago

ok, have a good weekend. no need to reply until you are ready :)

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