![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
![]() |
#1 |
Registered User
Join Date: Oct 2018
Location: Saluda, SC
Posts: 2
|
Brake light not working
Can anybody help me figure what is happening with my 1970 Chevy C10 ? Had new turn signal switch installed, new rear wiring harness installed, new rear turn/brake light housings and everything was working. Had the truck painted and NOW everything works but the brake lights put a new brake light switch on and still no brakes. Turn signals, taillights, and flasher operate but no brake lights. Could there still be a ground problem even though turn and taillights work ?
|
![]() |
![]() |
![]() |
#2 | |
Msgt USAF Ret
![]() ![]() Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,714
|
Re: Brake light not working
Quote:
If you get 12 volts then check the dark green and the yellow wires in the connector for 12 volts. These are the brake light wires. If you get the 12 volts, Then the turn signal switch is good and the problem is in the rear harness or at the rear lights. If your tail lights work then the grounds are good. The turn signal wires are the same as the brake light wires. Dark green is right turn/brake and yellow is left turn/brake light. Since your turn lights work your wires are good to the rear and I suspect it's the turn signal switch.
__________________
VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
|
![]() |
![]() |
![]() |
#3 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,642
|
Re: Brake light not working
You're lucky, you just got advice from our resident electrical wizard.
![]() Nothing I can add except to say welcome to the board!
__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
![]() |
![]() |
![]() |
#4 |
Registered User
Join Date: Oct 2018
Location: Saluda, SC
Posts: 2
|
Re: Brake light not working
Thanks VetteVet and Stocker. What if I don’t get 12 volts when checking white wire leading from brake light switch to turn signal switch ? Does that mean turn signal switch is bad ?
|
![]() |
![]() |
![]() |
#5 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,642
|
Re: Brake light not working
I may be mistaken, but it appears there should be 12V from a fuse through an orange wire to the brake light switch. Pressing the brake pedal will extend voltage to the white wire.
Hope this helps and that I'm not leading you down the rabbit hole. Link to wiring diagram.... look on the right side of the drawing. https://www.google.com/imgres?imgurl...act=mrc&uact=8
__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
![]() |
![]() |
![]() |
Bookmarks |
|
|