![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
![]() |
#1 |
Embrace the Redneck
Join Date: Jan 2004
Location: Cabot, AR
Posts: 1,334
|
I've searched and can't find the answer. Brake light in dash '68
The BRAKE light is on in my dash in my '68 truck. I've got a gauge cluster.
What causes this because the hand brake doesn't have a switch?
__________________
'01 Camaro Son, you just can't get there from here... |
![]() |
![]() |
![]() |
#2 |
Cruzin
Join Date: Dec 2009
Location: on the road
Posts: 2,835
|
Re: I've searched and can't find the answer. Brake light in dash '68
low fuild in the master cyl.?
__________________
Lime Wife's 67https://www.google.com/url?sa=t&rct=...wZEMODaS2d94u8 Back to the Fifties 59 https://www.google.com/url?sa=t&rct=...NAeStpydfrcj_U Proverbs 3:5,6 "Thanks to the Interstate Highway System, it is now possible to travel across the country from coast to coast without seeing anything."Charles Kuralt In memory of our first baby daughter, daddy and mommy love you. Danica Grace 6/26/14
|
![]() |
![]() |
![]() |
#3 |
The Older Generation
![]() ![]() ![]() Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,524
|
Re: I've searched and can't find the answer. Brake light in dash '68
-
It indicates that the valve in the Proportioning Valve Assembly has actuated. If you look at the valve assembly you will see the wire connected to it. Usually means that one of your brake systems has failed. (front or rear) LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - Last edited by LockDoc; 09-06-2010 at 10:57 PM. |
![]() |
![]() |
![]() |
#4 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
|
Re: I've searched and can't find the answer. Brake light in dash '68
yes it's an indication the brake bias is bad at the distribution block// check your wheel cylinders for leakage
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
![]() |
![]() |
![]() |
#5 |
Senior Member
![]() Join Date: Apr 2001
Location: Alexandria, MN
Posts: 1,462
|
Re: I've searched and can't find the answer. Brake light in dash '68
if you want to have the brake light come on when you have the ebrake come on you can pirate the set up off of an 81-87 p/u and modifiy it to work with either the hand brake (67-68) or the 69-72 foot pedal e-brake....
--Mike
__________________
63 C20 2WD, 230/SM420/4.11 73K 68 C30 dump truck, 327,SM425,4.56 66K original 68 C10 2WD SWB Stepper, 250/3-tree/3.73 66K.... Wifes 68 Buick Skylark Custom Conv., 350/TH400/2.56 In our family since '79 69 GMC 1500 SWB 2WD, 350/TH350/3.73 posi... 70 K10 SWB 4X4 4-sp,ps, pb, tilt, buckets, console, sliding back window (Need AC parts) WIP 72 Chevy K20 4x4 350/350/205/4.56 donor 72 Vette 350/M21/3.70 posi, triple black and super fast 84 Olds Cutlass Brougham 350/2004r/4.11 was Dad's |
![]() |
![]() |
![]() |
#6 |
Embrace the Redneck
Join Date: Jan 2004
Location: Cabot, AR
Posts: 1,334
|
Re: I've searched and can't find the answer. Brake light in dash '68
Yes, I had a brake line fail but it was on before the failure. How do I reset this switch.
__________________
'01 Camaro Son, you just can't get there from here... |
![]() |
![]() |
![]() |
#7 |
Embrace the Redneck
Join Date: Jan 2004
Location: Cabot, AR
Posts: 1,334
|
Re: I've searched and can't find the answer. Brake light in dash '68
Our trucks don't sense the level unless it's drained empty.
__________________
'01 Camaro Son, you just can't get there from here... |
![]() |
![]() |
![]() |
#8 | |
The Older Generation
![]() ![]() ![]() Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,524
|
Re: I've searched and can't find the answer. Brake light in dash '68
Quote:
LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
|
![]() |
![]() |
![]() |
#9 |
Embrace the Redneck
Join Date: Jan 2004
Location: Cabot, AR
Posts: 1,334
|
Re: I've searched and can't find the answer. Brake light in dash '68
I'm gonna go look right now
__________________
'01 Camaro Son, you just can't get there from here... |
![]() |
![]() |
![]() |
#10 |
Embrace the Redneck
Join Date: Jan 2004
Location: Cabot, AR
Posts: 1,334
|
Re: I've searched and can't find the answer. Brake light in dash '68
Mine looks exactly like this one. Minus the Power setup: There is no reset...
__________________
'01 Camaro Son, you just can't get there from here... Last edited by whitesswj; 09-08-2010 at 01:14 AM. |
![]() |
![]() |
![]() |
#11 |
Msgt USAF Ret
![]() ![]() Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,714
|
Re: I've searched and can't find the answer. Brake light in dash '68
If the brown wire that connects to the valve is grounded, it will turn on the light. Pull the wire off and see if the light goes out. If it stays on the brown wire is grounded some where, and if it goes out the problem is in the valve.
__________________
VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
![]() |
![]() |
![]() |
#12 |
Embrace the Redneck
Join Date: Jan 2004
Location: Cabot, AR
Posts: 1,334
|
Re: I've searched and can't find the answer. Brake light in dash '68
I pulled the wire and the light goes off and stays off.
Yesterday it flickerd before I pulled it. How do i reset that thing? It's driving me nuts...
__________________
'01 Camaro Son, you just can't get there from here... |
![]() |
![]() |
![]() |
#13 | |
Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
|
Re: I've searched and can't find the answer. Brake light in dash '68
Quote:
To reset it you need to: 1. Fix all the leaks. 2. Bleed the system at all four corners. Check all brake line and brake hose joints and all four wheel cylinders. Any moisture = leak. Once that is all up to snuff, I would at a minimum bleed at each corner until you get clean, fresh fluid out of each bleeder. If the light didn't go out yet it is stuck from having crummy, old fluid in there. You need to gently bang on the side of it and keep bleeding fluid until you can coax it back into place. Do make sure your wire isn't cracked and grounding some place else. Don't simply leave it disconnected. I'm guessing that if you disconnected it and it makes the light go out that the wire is fine. You just need to recenter the check ball in there.
__________________
'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
|
![]() |
![]() |
![]() |
#14 |
The Older Generation
![]() ![]() ![]() Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,524
|
Re: I've searched and can't find the answer. Brake light in dash '68
-
Or replace it... LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
![]() |
![]() |
![]() |
#15 |
Registered User
Join Date: May 2007
Location: Pennsylvania
Posts: 99
|
Re: I've searched and can't find the answer. Brake light in dash '68
Your unit looks like it's just a differential pressure switch, it senses pressure difference between the front and rear brake circuits. AMC had a similar switch on the older cars and once the switch was tripped by low pressure in one circuit the switch would remain tripped until it was manually reset even if the pressure was equal in both circuits. To reset the AMC's you had to unscrew the terminal the wire plugs onto, the terminal may be white plastic[nylon] and has a hex head [7/16" or 1/2"] and press on the brake pedal to center the piston in the block then re-install the terminal and reconnect the wire.
Hope this helps Bill |
![]() |
![]() |
![]() |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|