Rear turn signals/Brake lights inop. - Ford Powerstroke Diesel Forum
99-03 7.3L Exterior Discussion Body and Accessories Talk

LinkBack Thread Tools Display Modes
post #1 of 3 Old 01-30-2012, 12:22 PM Thread Starter Rookie
Join Date: May 2011
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Rear turn signals/Brake lights inop.

Hey, It started about a month ago, when my rear left brake light was not working. I ignored it. I got pulled over about a week ago saying that my brake lights are not working. Come to find out the my brake lights and rear turn signals don't work. BUT, my hazards and turn signals in the front do work.

I have a 12v test light and a multi-meter. I was wondering if anyone could point me in the right direction in order to diagnose my problem.

Thanks, In Advance.

Sent from Iphone
02Powerstroke4x4 is offline  
post #2 of 3 Old 01-30-2012, 12:47 PM
Super Moderator

SuperCrutyPS's Avatar
Join Date: Jul 2008
Location: Orangevale, CA
Posts: 15,423
Thanks: 83
Thanked 507 Times in 491 Posts
Mentioned: 5 Post(s)
Quoted: 279 Post(s)
Feedback Score: 0 reviews
Here's a link to take a look at an Owner's Manual, so you can check fuses.

The Brake light and turn signals use the same filament inside the bulb.

Does the TBL (3rd brake light) work?
Have you checked the bulbs themselves to see if they have gone bad? Do you get a fast flash when trying to use the turn signals? If you do, it's a good indication the bulb filaments are open. (Less load in the circuit causes fast flash with a stock flasher)

Owner | Operator: Darryl
My Truck Garage: Ol' Guy
Tow Toy Garage : Pilgrim International 31RE3SLF5
United States Navy - IC2 - '76-'80
SuperCrutyPS is offline  
post #3 of 3 Old 01-30-2012, 01:20 PM Thread Starter Rookie
Join Date: May 2011
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
TBL does not work. There is a fast flash. And I replaced all bulbs. Since the hazards work I can count out the relay right? And since the the flashers in the front work the multifunction switch is out. Haven't tested the brake switch but is sounds to me it's a short somewhere? Right...?
02Powerstroke4x4 is offline  

Quick Reply

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome