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Need Help !!! 2004 Gt No Brake Lights

  • Thread starter Thread starter Blake1770
  • Start date Start date Sep 13, 2017
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    mustang 2004 gt
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Blake1770

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#1
  • Sep 13, 2017
  • #1
I have a 2004 mustang gt I have no brake lights. I have power every where I have also changed fuses,bulbs,brake switch and also the blinker switch, I am lost can anyone plz help.
 

RaggedGT

Been here over a DECADE and still no CT
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Jul 20, 2014
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#2
  • Sep 13, 2017
  • #2
Welcome to Stangnet.
I moved your thread into the '96-04' section and edited your title . This way more members will see your thread,and drop in with ideas/advice.

When you say you have power everywhere-does that include at the brake light switch? Also have you checked the ground wires?
 

Sketchy_GT

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Nov 13, 2016
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#3
  • Sep 13, 2017
  • #3
i had that happen once with an 03 but mine wouldnt come out of park either, i had kicked some of the wires under the dash and the ones for the brake switch came loose
 
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Blake1770

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#4
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  • #4
The grounds are
RaggedGT said:
Welcome to Stangnet.
I moved your thread into the '96-04' section and edited your title . This way more members will see your thread,and drop in with ideas/advice.

When you say you have power everywhere-does that include at the brake light switch? Also have you checked the ground wires?
Click to expand...

The grounds were showing good I have power in and out of the brake light switch.
 
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Blake1770

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Sketchy_GT said:
i had that happen once with an 03 but mine wouldnt come out of park either, i had kicked some of the wires under the dash and the ones for the brake switch came loose
Click to expand...
All of the wires are tight and have power I checked the wires when I changed the switch.
 

wmburns

SN Certified Technician
Aug 14, 2009
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Houston Texas
Sep 13, 2017
#6
  • Sep 13, 2017
  • #6
CONFIRM +12 volts at the high mounted 3rd brake light using a KNOWN good ground.

IF no voltage at the 3rd brake light but confirmed voltage at the brake pedal switch the problem MUST be a wiring fault between the two locations.

Before chasing a wiring fault I strongly urge you to double check your work or a wild goose chase could be in your future.
 
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squeak93

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Jun 2, 2005
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Sep 13, 2017
#7
  • Sep 13, 2017
  • #7
Start in the drivers side kick panel. There are a lot of connectors in there that run from the front harness to the rear of the car. I've seen them get dirty, broken or pinched over the years and cause odd problems.
 

Neuron

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#8
  • Sep 13, 2017
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Your turn signals and hazards work OK?
 
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Blake1770

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Neuron said:
Your turn signals and hazards work OK?
Click to expand...
the left blinker is fast but the right blinker is normal hazards work fine
 
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Blake1770

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#10
  • Sep 13, 2017
  • #10
squeak93 said:
Start in the drivers side kick panel. There are a lot of connectors in there that run from the front harness to the rear of the car. I've seen them get dirty, broken or pinched over the years and cause odd problems.
Click to expand...
I will check that thank you
 

Neuron

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#11
  • Sep 14, 2017
  • #11
Does anyone know if the multi-funcition switch can cause this problem?
 

wmburns

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Sep 15, 2017
#12
  • Sep 15, 2017
  • #12
Neuron said:
Does anyone know if the multi-funcition switch can cause this problem?
Click to expand...
NO! Why? Because the high mounted 3rd brake light does not go through the multi-function switch. Hence the reason why best to over all brake power test location is at the 3rd brake light.
 
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