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

tail light info

Thread Tools
 
Search this Thread
 
Old Nov 16, 2013 | 08:17 AM
  #1  
lilrobo's Avatar
lilrobo
Thread Starter
|
Senior User
Joined: May 2012
Posts: 434
Likes: 0
tail light info

came home yesterday and got told that i have a brake light out ,, i checked the bulb and it looked ok so i changed it and still no light on the drivers side ,, so i got the volt meter out and i have 3 wires going to the rear ,, and with the key on and a stick on the pedal the pass works and only 1 wire is hot of the 3 and it goes straight to the pass side ,, so i dont know how it works with 3 wires
what are they for ??
the turn has to have 1 each ? ( 2 )
the parking has to have 1 to both ,, mine work on both sides by the way
so that leaves only 1 wire right to brake lights

confused
 
Reply
Old Nov 16, 2013 | 08:31 AM
  #2  
EffieTrucker's Avatar
EffieTrucker
Phantom of the Phorum
15 Year Member
Shutterbug
Liked
Community Favorite
Joined: Jan 2011
Posts: 5,470
Likes: 1,696
From: Kentucky
Club FTE Silver Member

One wire goes to the right turn signal, one wire goes to the left turn signal, and one wire goes to both marker lights.

The brake lights work off the turn signals, (if you have turn signals) and the turn signal switch decides which ones come on, and when.

If you don't have turn signals, then both brake lights are wired together.

If you do have turn signals, does the left one work? If so, then it sounds like your problem is in the turn signal switch. If it does not, then the problem could be anywhere in the wiring between the turn signal switch and the tail light.

I've included the factory turn signal wiring schematic for reference. The "pilot light" is the indicator light in the dash.
 
Attached Images  
Reply
Old Nov 16, 2013 | 08:38 AM
  #3  
lilrobo's Avatar
lilrobo
Thread Starter
|
Senior User
Joined: May 2012
Posts: 434
Likes: 0
yes you are right that side the turn dont work either i just checked
so what you suggest ?
 
Reply
Old Nov 16, 2013 | 08:45 AM
  #4  
lilrobo's Avatar
lilrobo
Thread Starter
|
Senior User
Joined: May 2012
Posts: 434
Likes: 0
so it might be because of turn signal ??
 
Reply
Old Nov 16, 2013 | 08:53 AM
  #5  
larryb346's Avatar
larryb346
Laughing Gas
15 Year Member
Photogenic
Joined: Nov 2008
Posts: 914
Likes: 51
From: SW Missouri
Check to see if your tail light works. If not is likely the ground to the light. If the taillight works and not the brake light it is likely the turn signal switch or the wiring from the switch to the tail light.
Good Luck
Larry
 
Reply
Old Nov 16, 2013 | 10:48 AM
  #6  
lilrobo's Avatar
lilrobo
Thread Starter
|
Senior User
Joined: May 2012
Posts: 434
Likes: 0
yes tail ( parking ) lights do work ,, so that means it come from the turn signals ??
 
Reply
Old Nov 16, 2013 | 11:38 AM
  #7  
52 Merc's Avatar
52 Merc
Hotshot
15 Year Member
Liked
Community Favorite
Top Answer: 3
Joined: Oct 2009
Posts: 16,152
Likes: 4,750
From: Burbank, WA
Originally Posted by lilrobo
yes you are right that side the turn dont work either i just checked
so what you suggest ?
Trace your wire back to the source of power to find where the disconnect is.
 
Reply
Old Nov 16, 2013 | 12:44 PM
  #8  
lilrobo's Avatar
lilrobo
Thread Starter
|
Senior User
Joined: May 2012
Posts: 434
Likes: 0
so i have a might mare here for some reason ,, away
the bulb has 2 filaments high and low ,, the brake and turn uses the high and the parking uses the low, right ? and on that low side , the side marker light uses that same low side ( small bulb ) in same light fixture is that right so far ??, and if so how does the brake light switch( pressure switch ) come in to play ? i know 1 side is hot and when pressure is applied send power to where ? i think it all started when i did the dash cluster and i just didnt know it ,,

thanks
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Top 10 Ford Truck Tragedies

 Joe Kucinski
story-1

AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

 Brett Foote
story-2

Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

 Michael S. Palmer
story-3

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-4

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-5

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

 Brett Foote
story-6

2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

 Michael S. Palmer
story-7

10 Most Surprising 2026 Ford Truck Features!

 Joe Kucinski
story-8

Top 10 Ford Trucks Coming to Mecum Indy 2026

 Brett Foote
story-9

5 Best / 5 Worst Ford Truck Wheels of All Time

 Joe Kucinski
Old Nov 16, 2013 | 01:01 PM
  #9  
EffieTrucker's Avatar
EffieTrucker
Phantom of the Phorum
15 Year Member
Shutterbug
Liked
Community Favorite
Joined: Jan 2011
Posts: 5,470
Likes: 1,696
From: Kentucky
Club FTE Silver Member

The brake light switch sends power to the turn signal switch. It directs th power to the tail and front marker lights from there.

As was stated earlier, if the left turn signal and brake light are both out, I would look at that wire and connections first.

Sent from my iPhone using IB AutoGroup
 
Reply
Old Nov 16, 2013 | 02:45 PM
  #10  
lilrobo's Avatar
lilrobo
Thread Starter
|
Senior User
Joined: May 2012
Posts: 434
Likes: 0
i found the problem ,,
1 st there was a wire that came apart i fixed that but the main problem was the other day i thought the bulb was blown so i replaced it but i didnt put it in right and i was getting bleed over ,, i dont like these tail light the blub dont go in right ,,, anyway sorry for all the hassle and thanks for helping me out
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Number36Car
1967 - 1972 F-100 & Larger F-Series Trucks
2
Nov 20, 2013 08:07 PM
Gang3
1973 - 1979 F-100 & Larger F-Series Trucks
6
Aug 12, 2012 07:48 PM
jommer
Electrical Systems/Wiring
1
Aug 13, 2005 09:50 PM
ranger429
1973 - 1979 F-100 & Larger F-Series Trucks
12
Aug 26, 2003 03:39 PM
GSchretter
1987 - 1996 F150 & Larger F-Series Trucks
2
Mar 31, 2003 11:07 AM




All times are GMT -5. The time now is 01:26 AM.

story-0
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-1
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-2
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-3
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-4
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-5
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-6
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-7
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-8
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-9
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE