Go Back   Ford Truck Enthusiasts Forums > Newer Light Duty Trucks > 1997 - 2003 F150
Sign in using an external account
Register Forgot Password?


1997 - 2003 F150 1997-2003 F150, 1997-1999 F250LD, 7700 & 2004 F150 Heritage SPONSORED BY:

Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 07-30-2007, 01:11 PM
smathewson smathewson is offline
New User
 
Join Date: Jul 2007
Location: Folsom, CA
Posts: 4
smathewson is starting off with a positive reputation.
trailer turn signal and brake lights don't work

My trailer turn signal and brake lights stopped working. no current to the plug at the trailer hitch for the turn signals or brake lights. I went thru the manual and checked all the fuses that related to the trailer lights and replaced them eventhough they looked good. My next step was to replace the Multi Function Switch (MFS) but I don't want to tear it apart unless I absolutely need to. I read a post where an individual solved the problem by locating a fuse not listed in the owners manual, unfortunately, I can't email the individual for more details because I'm new to the site. Anyone have any ideas?

smathewson
Reply With Quote
  #2  
Old 07-30-2007, 01:27 PM
KingRanchMan02's Avatar
KingRanchMan02 KingRanchMan02 is offline
Posting Guru
 
Join Date: Oct 2005
Location: Louisville, Kentucky
Posts: 2,199
KingRanchMan02 is gaining momentum as a positive member of FTE.KingRanchMan02 is gaining momentum as a positive member of FTE.
Welcome to FTE smathewson! . What year, model, engine, transmission, and mileage? We are all groping in the dark without this type of information.
__________________
John, aka KingRanchMan02
`02 F-150 King Ranch SuperCab
Charcoal Blue/Arizona Biege, 5.4L 3.55 LS, 4x2, Diablosport Predator Programmer, K&N filter.
FTE Ride of The Week, 4/20/09 !!!
`08 Mercury Sable Premier, 3.5L Duratec, 6 speed auto
Reply With Quote
  #3  
Old 07-30-2007, 01:30 PM
Markga45 Markga45 is offline
Freshman User
 
Join Date: Jul 2006
Location: Southeast Ga.
Posts: 28
Markga45 is starting off with a positive reputation.
Make sure you have a good ground wire going to the trailer. Sometimes people rely on the trailer hitch and ball making good enough contact to produce a ground between truck and trailer and this doesn't always happen. I'd check the ground between truck and trailer first.
Reply With Quote
  #4  
Old 07-30-2007, 02:04 PM
smathewson smathewson is offline
New User
 
Join Date: Jul 2007
Location: Folsom, CA
Posts: 4
smathewson is starting off with a positive reputation.
in reply to Kingranchman02, I have a 1997 black F 150, 4x4, 5.4 L V8,with a towing package with 74k miles. The ground wires on the truck and the trailer were the first items checked, cleaned, brushed, etc.
Reply With Quote
  #5  
Old 07-30-2007, 02:05 PM
BLK94F150 BLK94F150 is offline
Postmaster
 
Join Date: Sep 2002
Location: None of your business
Posts: 3,077
BLK94F150 has a great reputation on FTE.BLK94F150 has a great reputation on FTE.BLK94F150 has a great reputation on FTE.BLK94F150 has a great reputation on FTE.
Did you check the fuses under the hood?

Mike
__________________
Confusing people's opinions with facts here since 09-30-2002
Reply With Quote
  #6  
Old 07-30-2007, 02:22 PM
smathewson smathewson is offline
New User
 
Join Date: Jul 2007
Location: Folsom, CA
Posts: 4
smathewson is starting off with a positive reputation.
I checked the fuses under the hood that were related to the trailer, per the owners manual and replaced them.
Reply With Quote
  #7  
Old 07-30-2007, 02:42 PM
87 XLT 87 XLT is offline
Postmaster
 
Join Date: Oct 2003
Location: SoCal
Posts: 3,790
87 XLT is gaining momentum as a positive member of FTE.
My 97 Explorer has trailer tow relays under the hood in in the aux relay box.

I suspect yours is the same, have you checked them?
Reply With Quote
  #8  
Old 07-30-2007, 03:38 PM
BLK94F150 BLK94F150 is offline
Postmaster
 
Join Date: Sep 2002
Location: None of your business
Posts: 3,077
BLK94F150 has a great reputation on FTE.BLK94F150 has a great reputation on FTE.BLK94F150 has a great reputation on FTE.BLK94F150 has a great reputation on FTE.
Quote:
Originally Posted by smathewson
I checked the fuses under the hood that were related to the trailer, per the owners manual and replaced them.
Check them all. I wouldn't replace them if they aren't bad. I'm sure that Ford ran something with the trailer lights through something else that wouldn't normally be related to the trailer lights.

Normally if my lights don't work, it's because I've blown a 10 amp fuse under the hood. It's close to the front of the box.

Mike
__________________
Confusing people's opinions with facts here since 09-30-2002
Reply With Quote
  #9  
Old 07-30-2007, 10:39 PM
smathewson smathewson is offline
New User
 
Join Date: Jul 2007
Location: Folsom, CA
Posts: 4
smathewson is starting off with a positive reputation.
Thanks for the advice. You were right "BLK94F150" and "87 XLT", I found a little 2 fuse box with a 20 amp fuse blown. My owners manual had it shown in a different spot and my Haynes manual was worthless. Lights are now working. I can now continue on my quest to trailer my 67 mustang conv. to the paint shop.
Reply With Quote
Old 07-30-2007, 10:39 PM
Reply

Go Back   Ford Truck Enthusiasts Forums > Newer Light Duty Trucks > 1997 - 2003 F150

Tags
150, lights, trailer, trucks, work, work2007

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On
Forum Jump



All times are GMT -5. The time now is 07:37 AM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup