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Ask Jerry Your Own Question
Jerry, Master Mechanic
Category: Dodge
Satisfied Customers: 1754
Experience:  ASE Master tech, 30 years exp. troubleshooter, driveability tech
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My turn signal and brake lights don't work but the running

Customer Question

My turn signal and brake lights don't work but the running lights work
JA: Have you checked the brake fluid? How's the level and when was it last changed?
Customer: My light are not working not the breaks and the hazard lights don't work. This is all on the rear of the truck. On the front all light functions work beside the breaks of couses
JA: What is the model/year of your Dodge?
Customer: 07 1500 3.7l
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: Yes and replaced the tail light bulbs and. The break switch. And still nothing.
JA: Anything else you want the mechanic to know before I connect you?
Customer: That's about it.
Submitted: 3 months ago.
Category: Dodge
Expert:  Dan replied 3 months ago.

Hello, my name is ***** ***** I'm here to help get your problem solved.

Expert:  Dan replied 3 months ago.

What is your vin number? Thanks.

Customer: replied 3 months ago.
Expert:  Dan replied 3 months ago.

Do turn signal indicators on dash even light up?

Customer: replied 3 months ago.
they do
Expert:  Dan replied 3 months ago.

Do front or rear signals work? Does the center high mount brake light work?

Customer: replied 3 months ago.
Front work on all functions work. But only the back running light work and the center night mount only the cargo light work no break lights at all
Expert:  Dan replied 3 months ago.

Did all problems happen at the exact same time? This usually means the totally integrated power module has failed but the center brake light doesn't go through power module so that would work is module was the problem.

Customer: replied 3 months ago.
Where is that located?
Expert:  Dan replied 3 months ago.

It is built into fuse box under the hood and needs to be reprogrammed at dealer but since front lights are working and center brake light isn't working some testing needs to be done. Lets start by checking to see if gray/red wire going to brake light switch has power. If so jump the gray/red wire to the white/tan wire and then check to see if white/tan wire at high mount center brake light has power. Let me know, thanks.