Brake lights not working?

Tiny
KEN77
  • MEMBER
  • 3 POSTS
Yes, turn signals work fine along with tail lights. There is no third light.
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Friday, February 26th, 2021 AT 10:17 AM (Merged)
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
Check for power at the white wire at the multifunction switch when pressing the brake. if no power then trace it to the brake light switch and repair the broken wire. get back to us if you need further help


https://www.2carpros.com/forum/automotive_pictures/139033_no_3.jpg

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Friday, February 26th, 2021 AT 10:17 AM (Merged)
Tiny
KEN77
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  • 3 POSTS
I have power at the white wire coming from the brake switch, but not at the multifunction switch when I depress the brake.
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Friday, February 26th, 2021 AT 10:17 AM (Merged)
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
The wire is probably broken AT THE solder joint, just run a new wire from white to white at multi function switch and you should be ok
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Friday, February 26th, 2021 AT 10:17 AM (Merged)
Tiny
ROSSICKLE
  • MEMBER
  • 9 POSTS
1997 Chevy Silverado V8 Four Wheel Drive Automatic 220000 miles

My brake lights do not work. The blinkers, reverse and tail lights all work fine. I also have a topper on the truck, which the third brake light works fine. Coming from the front of the truck are 5 wires, Brown, Yellow, Dark Green, Light Green and WHITE. The white wire has power when the brakes are applied, but the white wire is not connected to anything. I dont know where it is suppose to go. The WHITE wire is spliced into for the third brake light( which agian works perfect) Anyone have the correct answer?
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Friday, February 26th, 2021 AT 10:17 AM (Merged)
Tiny
REBEL_KID01
  • MEMBER
  • 3 POSTS
  • 1997 CHEVROLET SILVERADO
  • 5.0L
  • 5 CYL
  • 2WD
  • AUTOMATIC
  • 115,000 MILES
I have a 1997 chevy 1500 that I just bought a few months ago and my turn signals work but yet my brake lights dont what could cause the problem?
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Friday, February 26th, 2021 AT 10:17 AM (Merged)
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Does the high mount brake lamp work? If neither the high mount brake lamp or the lower brake lamps work, have to check stop lamp fuse and stop lamp switch.
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Friday, February 26th, 2021 AT 10:17 AM (Merged)
Tiny
REBEL_KID01
  • MEMBER
  • 3 POSTS
Wheres the stop lamp switch at?
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Friday, February 26th, 2021 AT 10:17 AM (Merged)
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
The switch is activated by the brake pedal arm, follow the brake pedal arm, you should find the switch. In the diagram posted, did you check for voltage at the stop fuse?
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Friday, February 26th, 2021 AT 10:17 AM (Merged)
Tiny
REBEL_KID01
  • MEMBER
  • 3 POSTS
Iv already replaced that switch n still nothing
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Friday, February 26th, 2021 AT 10:17 AM (Merged)
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Did you check voltage to and from that switch, I gave you the wiring colors. Is the switch adjustable, anyway? Can you use a jumper on the proper wire colors and bypass the switch, just to see if brake lamps will work? Of course that proper wire color in diagram, on top. Has to have voltage, for the jumper to work.
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Friday, February 26th, 2021 AT 10:17 AM (Merged)
Tiny
LUCASJAKE
  • MEMBER
  • 1 POST
  • 1997 CHEVROLET SILVERADO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 106,000 MILES
My truck has tail lights and turn signals, but no brake lights. The fuse is ok. What else can I check? Where is the brake light switch?
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Friday, February 26th, 2021 AT 10:18 AM (Merged)
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS


https://www.2carpros.com/forum/automotive_pictures/170934_brake_switch_2.jpg



I found the above info for removal. Does the highmount brake lite work? The orange wire is feed to the brake switch, hot all the time. White wire is the feed coming from the brake switch to brake lites, that wire should be hot when you step on the brake.
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Friday, February 26th, 2021 AT 10:18 AM (Merged)
Tiny
LMIZELL
  • MEMBER
  • 1 POST
I have same issue as rossickle. Mine is 94 3500 2wd. Spliced into turn signals, the white brake wire correctly opperates brakes lights. BUT it overrides the turn signals, so it's not a fix. Drove it yesterday like that and got a warning ticket for no turn signals. Frustrated.
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Monday, July 10th, 2023 AT 9:03 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,642 POSTS
It looks like the white wire goes to the high mount brake light relay, here are the wiring diagrams for the system so you can see how the brake light works. Also, here is a guide that might help as well:

https://www.2carpros.com/articles/brake-lights-not-working

Check out the images (below). Please let us know what happens.
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Tuesday, July 11th, 2023 AT 9:38 AM

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