Notices
1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

brake lights stuck on

Thread Tools
 
Search this Thread
 
Old Apr 1, 2016 | 10:31 PM
  #1  
blazin94's Avatar
blazin94
Thread Starter
|
New User
Joined: Apr 2016
Posts: 7
Likes: 0
From: Tollhouse
brake lights stuck on

Please help. Picked up a 1994 F-350 4x4 diesel 5 speed crew cab and been fixing things on it but I just can't figure this out. I've replaced the brake light switch on pedal and the turn/hazzard/wiper control muti-function switch on the column. I've removed all 3, yes 3! trailer light plugs the P.O. installed and removed/repaired/replaced all the screwed up wiring from all the trailer light stuff. There is no trailer brake controler in it now, but I think there used to be. I've looked for for wiring for a trailer brake controler to remove but can't find any. I don't know what else to do/ try/ remove. Suggestions?

Thanks
 
Reply
Old Apr 4, 2016 | 12:19 AM
  #2  
blazin94's Avatar
blazin94
Thread Starter
|
New User
Joined: Apr 2016
Posts: 7
Likes: 0
From: Tollhouse
I appreciate all the views. I guess everybody is as stumped as I am.
 
Reply
Old Apr 4, 2016 | 05:40 AM
  #3  
bashby's Avatar
bashby
Post Fiend
Joined: Nov 2005
Posts: 7,437
Likes: 4
From: Charles Town, W bygod Va
Do they go out when you unplug the brake light switch? How about the multi function switch?
 
Reply
Old Apr 4, 2016 | 09:05 AM
  #4  
Da_Lariat_Chariot's Avatar
Da_Lariat_Chariot
Laughing Gas
Joined: Feb 2015
Posts: 765
Likes: 1
Originally Posted by bashby
Do they go out when you unplug the brake light switch? How about the multi function switch?

^ What he said. Check the brake light switch mounted to the metal brake pedal under the dash. If that isn't the problem there is most likely a short to power in the brake light circuit affecting both left/right sides before they split.
 
Reply
Old Apr 4, 2016 | 09:11 AM
  #5  
Brain's 97 Diesel's Avatar
Brain's 97 Diesel
Senior User
Joined: Aug 2009
Posts: 432
Likes: 0
From: Willow Grove, PA
Trailer brake plugs into harness under dash on top of trans tunnel, its a 4 wire square plug. make sure there are NO plugs in it if there is no controller in cab.
 
Reply
Old Apr 4, 2016 | 10:30 PM
  #6  
blazin94's Avatar
blazin94
Thread Starter
|
New User
Joined: Apr 2016
Posts: 7
Likes: 0
From: Tollhouse
Originally Posted by bashby
Do they go out when you unplug the brake light switch? How about the multi function switch?
The brake lights do NOT go out when I unplug the switch on the brake pedal. They DO go out when I unplug the multi function switch. I have replaced both the switch on the pedal and the multi function switch.
 
Reply
Old Apr 5, 2016 | 04:59 AM
  #7  
bashby's Avatar
bashby
Post Fiend
Joined: Nov 2005
Posts: 7,437
Likes: 4
From: Charles Town, W bygod Va
Hazard switch on?
 
Reply
Old Apr 6, 2016 | 08:38 PM
  #8  
blazin94's Avatar
blazin94
Thread Starter
|
New User
Joined: Apr 2016
Posts: 7
Likes: 0
From: Tollhouse
Originally Posted by bashby
Hazard switch on?
Hazards function normally, the lights just stay on when I turn the hazard switch off.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

10 Fords to Drive Before You Die

 Joe Kucinski
story-1

3 Best / Worst Features Of The 2025+ Ford Expedition

 Brett Foote
story-2

10 Ways Ford is LOSING to the Competition

 Joe Kucinski
story-3

Top 6 Best Deals Available on New Fords & Lincolns Right Now

 Brett Foote
story-4

This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

 Verdad Gallardo
story-5

Top 10 Fords at 2026 Carlisle Ford Nationals

 Joe Kucinski
story-6

3 Best / 3 Worst Parts of Modern Ford Ownership

 Brett Foote
story-7

10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

 Pouria Savadkouei
story-8

Every 2026 Ford Engine Explained

 Brett Foote
story-9

10 Ugly Ford Trucks That We Still Kinda Love

 Joe Kucinski
Old Apr 7, 2016 | 04:51 AM
  #9  
bashby's Avatar
bashby
Post Fiend
Joined: Nov 2005
Posts: 7,437
Likes: 4
From: Charles Town, W bygod Va
How about if you remove the hazard flasher?
 
Reply
Old Apr 7, 2016 | 07:10 AM
  #10  
blazin94's Avatar
blazin94
Thread Starter
|
New User
Joined: Apr 2016
Posts: 7
Likes: 0
From: Tollhouse
Originally Posted by bashby
How about if you remove the hazard flasher?
You mean the flasher itself, in the fuse block? I'll try that.
 
Reply
Old Apr 7, 2016 | 09:36 AM
  #11  
Da_Lariat_Chariot's Avatar
Da_Lariat_Chariot
Laughing Gas
Joined: Feb 2015
Posts: 765
Likes: 1
The hazard flasher is buried up in the passenger side somewhere if I remember correctly. You may have to remove the glove box to find it, but it's not the same as the turn signal flasher.
 
Reply
Old Apr 7, 2016 | 01:25 PM
  #12  
madpogue's Avatar
madpogue
Lead Driver
20 Year Member
Liked
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
On a '94, the hazard flasher should be on the "blind" side of the interior fuse box. IIRC, only the '87-'91 generation had the hazard flasher over on the passenger side.

That poor flasher has been Ford's red-headed stepchild; for at least 18 model years, they couldn't come up with an accessible AND sensible place to put it.
 
Reply
Old Apr 7, 2016 | 07:51 PM
  #13  
blazin94's Avatar
blazin94
Thread Starter
|
New User
Joined: Apr 2016
Posts: 7
Likes: 0
From: Tollhouse
By "blind side" do you mean the backside of the fuse block, twords the firewall?
 
Reply
Old Apr 7, 2016 | 07:56 PM
  #14  
htownoag's Avatar
htownoag
Senior User
Joined: Jan 2013
Posts: 172
Likes: 0
There are 2 flashers on the fuse block on my 94. Right behind the same spot
 
Reply
Old Apr 7, 2016 | 08:44 PM
  #15  
madpogue's Avatar
madpogue
Lead Driver
20 Year Member
Liked
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
Originally Posted by blazin94
By "blind side" do you mean the backside of the fuse block, twords the firewall?
Correct; the side you can't see.
 
Reply



All times are GMT -5. The time now is 09:41 AM.

story-0
10 Fords to Drive Before You Die

Slideshow: 10 Fords to drive before you die.

By Joe Kucinski | 2026-06-22 14:29:44


VIEW MORE
story-1
3 Best / Worst Features Of The 2025+ Ford Expedition

The latest Expedition is quite popular, but it certainly isn't perfect.

By Brett Foote | 2026-06-22 14:23:19


VIEW MORE
story-2
10 Ways Ford is LOSING to the Competition

Slideshow: 10 ways Ford is losing to the competition

By Joe Kucinski | 2026-06-15 09:52:01


VIEW MORE
story-3
Top 6 Best Deals Available on New Fords & Lincolns Right Now

Some great targets in today's expensive world.

By Brett Foote | 2026-06-15 09:35:19


VIEW MORE
story-4
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-5
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-6
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-7
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-8
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-9
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE