Notices
1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

Brake Light Problems

Thread Tools
 
Search this Thread
 
Old Jun 10, 2009 | 07:21 PM
  #1  
tlb's Avatar
tlb
Thread Starter
|
Elder User
Joined: Dec 2003
Posts: 586
Likes: 0
From: East Palestine, Ohio
Club FTE Silver Member

Brake Light Problems

I got all my problems with the gas tank solved but now my brake lights don't work. I have turn signals, running lights and flashers so it can't be the bulbs. I am getting power to the switch but nothing to brake lights. I tried a test wire from the positive side of the battery to the switch and still nothing. I have an easy wire harness that i put in 4 years ago and have not had any problems. I haven't replaced the switch yet because i am not convinced that is the problem. I was wondering if any one else has had a similar problem and if so how did you fix it.

Thanks
Terry
 
Reply
Old Jun 10, 2009 | 07:41 PM
  #2  
jaye's Avatar
jaye
Posting Guru
25 Year Member
Joined: Aug 2000
Posts: 1,849
Likes: 0
From: S.C.
If you are getting power out to the wires from the brake switch try using a test light on the wires and at the end of the brake wire it may be the contact on the base bulb or a brake in the wires some where also check your ground wire (1st).
 
Reply
Old Jun 10, 2009 | 07:59 PM
  #3  
bobbytnm's Avatar
bobbytnm
Roast em' if you got 'em
20 Year Member
Liked
Loved
Community Favorite
Joined: Mar 2005
Posts: 21,997
Likes: 9,886
From: Rio Rancho, NM
Club FTE Gold Member
You mention getting power to the switch, are you getting power through the switch? Are you using the original hydraulic switch in the brake line or did you go with a mechanical switch?
The hydraulic switches fail on a consistent basis.

As Jaye stated....check your grounds

Bobby
 
Reply
Old Jun 11, 2009 | 09:05 AM
  #4  
Julies Cool F1's Avatar
Julies Cool F1
Post Fiend
Joined: May 2008
Posts: 7,641
Likes: 21
From: Poway, Ca.
If your signal lights are working, and the stop lights used to work, then the problem has to be a bad brake light switch, wire on the outbound side of the brake light switch, or connection of that wire at you signal switch.

Your signal lights use the brake light wire and filiment to flash. So if they are working the circuit is complete back to the lights, and the grounds are good. The signals however get power from a different source when in use.

If you have power to the brake light switch, then your fuse (if you have one) and power supply is good as well.

So you simply don't have power/contenuity from the outbound side of the brake light switch up to the signal switch.

Check your connections on that line, and check for current coming out of the brake light switch when the brakes are stepped on.
 
Reply
Old Jun 11, 2009 | 10:03 PM
  #5  
48ATOY's Avatar
48ATOY
Tuned
20 Year Member
Joined: Apr 2004
Posts: 272
Likes: 37
From: Chicago
Had the same problem 2 years ago

turn signal worked all 4 corners
hazard worked all for corners

I wiggled the turn signal arm on the after market type
it would worked for the brakes some times

had to replace the 7wire aftermarket turn signal assembly

everything was fine then

Joe
 
Reply
Old Jun 12, 2009 | 10:17 AM
  #6  
Julies Cool F1's Avatar
Julies Cool F1
Post Fiend
Joined: May 2008
Posts: 7,641
Likes: 21
From: Poway, Ca.
Originally Posted by 48ATOY
Had the same problem 2 years ago

turn signal worked all 4 corners
hazard worked all for corners

I wiggled the turn signal arm on the after market type
it would worked for the brakes some times

had to replace the 7wire aftermarket turn signal assembly

everything was fine then

Joe
Yes that's true as well. It takes the continuety thing one step farther - the contacts in the switch have to be good as well.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
nightowl263
1987 - 1996 F150 & Larger F-Series Trucks
2
Jan 2, 2015 09:41 PM
hwyhogg
1948 - 1956 F1, F100 & Larger F-Series Trucks
15
Dec 8, 2014 08:15 PM
quadrazer
1973 - 1979 F-100 & Larger F-Series Trucks
5
Nov 23, 2012 10:54 AM
IHF250fireman
1973 - 1979 F-100 & Larger F-Series Trucks
8
Jan 13, 2010 07:45 PM
jsharp921
1987 - 1996 F150 & Larger F-Series Trucks
4
Nov 12, 2005 07:35 PM




All times are GMT -5. The time now is 03:51 PM.