Head lights flashing - Ranger-Forums - The Ultimate Ford Ranger Resource


General Technical & Electrical General technical and electrical discussion for the Ford Ranger that does not fit in any other sub-forum.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 02-25-2016
Member
Thread Starter
 
Join Date: Feb 2016
Location: Brackley Beach
Posts: 3
Head lights flashing

Hello all - My head lights are flashing on and off on a random bases over the hour or so. I checked the connections them seem to be fine. It is dry under the hood. It has been raining off and on all day. Any suggesting?

Thanks

Ken
Reply With Quote
  #2  
Old 02-25-2016
RF Veteran
iTrader: (1)
 
Join Date: Jan 2014
Location: Vancouver, BC
Posts: 7,585
Do you have DLR(day light running lights)?
Could be E-Brake switch is causing it, this switch turns on the DLR when E-Brake is released.

And is the main light switch in the ON position when they flash or the AUTO position?

The head light power runs from main light switch to Multi-function switch(turn signal stalk), for "flash to pass" function and then to the "Low Current Board" in the Smart Junction Box(SJB).
"Low Current Board" feeds fuses 1 and 3 in SJB one for each head light.

Heads lights are grounded separately so probably not a loose ground wire
Reply With Quote
  #3  
Old 02-26-2016
Member
Thread Starter
 
Join Date: Feb 2016
Location: Brackley Beach
Posts: 3
Quote:
Originally Posted by RonD View Post
Do you have DLR(day light running lights)?
Could be E-Brake switch is causing it, this switch turns on the DLR when E-Brake is released.

And is the main light switch in the ON position when they flash or the AUTO position?

The head light power runs from main light switch to Multi-function switch(turn signal stalk), for "flash to pass" function and then to the "Low Current Board" in the Smart Junction Box(SJB).
"Low Current Board" feeds fuses 1 and 3 in SJB one for each head light.

Heads lights are grounded separately so probably not a loose ground wire
Hi Ron, thanks for your reply, I do have DLR, the head lights randomly flash when I turn the truck off. The main light switch is turned off, when turned on the lights do not flash.
Reply With Quote
  #4  
Old 02-26-2016
RF Veteran
iTrader: (1)
 
Join Date: Jan 2014
Location: Vancouver, BC
Posts: 7,585
Rangers didn't come with factory perimeter alarms, they do have PATS but it is "passive" so no connection to lights or horn, it only disables starter motor and fuel supply if activated.

Ford Dealers did add perimeter alarms, these were Ford approved, but not factory installed as far as I know.
And these do hook up to the lights, i.e. head lights flash when you arm and disarm.

Do you think there is an alarm installed?

Only other thing would be the DRL(sorry, DLR were wrong initials) circuit, but it shouldn't have power to activate the lights when key is off.
If you don't already do this then set the emergency brake, this disables DRL circuit.
And see if lights still flash.


Seems it is not all that unusual on Ford Trucks, read here: http://www.f150forum.com/f38/headlig...uck-off-94470/

Last edited by RonD; 02-26-2016 at 11:10 AM.
Reply With Quote
  #5  
Old 02-27-2016
Member
Thread Starter
 
Join Date: Feb 2016
Location: Brackley Beach
Posts: 3
thanks again Ron, no alarmed installed, I tried the e brake, lights still flashing.

Ken
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Flashing Dash lights 94cobra 2.9L & 3.0L V6 Tech 3 07-02-2009 01:10 PM
4x4 HI & 4x4 LOW lights flashing Wolf08 Drivetrain Tech 3 06-05-2009 08:26 PM
flashing 4wd lights....help 99offroadrngr General Technical & Electrical 5 10-08-2008 10:46 AM
4hi/4lo lights flashing redneckbrat Drivetrain Tech 11 03-18-2007 10:12 AM
4x4 lights flashing, no lock up Hitch Drivetrain Tech 5 11-12-2006 09:24 PM


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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 10:42 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.