OBS headlights staying on
Thread Starter
|
Mountain Pass
Joined: Feb 2007
Posts: 183
Likes: 2
OBS headlights staying on
New to me as of today. 1997 f350 CC LB 4x4 XL 7.5 auto 122k . Headlights stay on ever so dimly when truck is running and switch is off. Lights go out with key off and everything seems to operate correctly for the most part. Did notice that the drivers door switch is not working so not getting warning chime, door open/headlights on. Wondering if this is related. Not finding much on this on line searching. Maybe ground back feeding?
Logistics Pro
Joined: Nov 2013
Posts: 3,928
Likes: 1,198
From: Mojave, Ca
Probably not the door chime since it's wired into the marker lights, not headlights.
Its probably not the headlight switch because it received power all the time and you said the lights turn off when you turn the ignition off.
My suggestion would be to have the ignition on and have someone watch the headlight while you pull fuses in the cab. When the lights go out, figure out what that fuse powers and go from there. I'm guessing it's a forgotten aftermarket alarm.
Its probably not the headlight switch because it received power all the time and you said the lights turn off when you turn the ignition off.
My suggestion would be to have the ignition on and have someone watch the headlight while you pull fuses in the cab. When the lights go out, figure out what that fuse powers and go from there. I'm guessing it's a forgotten aftermarket alarm.
Thread Starter
|
Mountain Pass
Joined: Feb 2007
Posts: 183
Likes: 2
Probably not the door chime since it's wired into the marker lights, not headlights.
Its probably not the headlight switch because it received power all the time and you said the lights turn off when you turn the ignition off.
My suggestion would be to have the ignition on and have someone watch the headlight while you pull fuses in the cab. When the lights go out, figure out what that fuse powers and go from there. I'm guessing it's a forgotten aftermarket alarm.
Its probably not the headlight switch because it received power all the time and you said the lights turn off when you turn the ignition off.
My suggestion would be to have the ignition on and have someone watch the headlight while you pull fuses in the cab. When the lights go out, figure out what that fuse powers and go from there. I'm guessing it's a forgotten aftermarket alarm.
Lights only on dimmly when engine running. Engine off and key on not a problem. With engine running did as you suggested and pulled every fuse one at a time and no change. Did notice another oddity, no high beam indicator when high beams on but as you turn the ignition key off it flashes on the dash. So I know the bulb is good.
Thread Starter
|
Mountain Pass
Joined: Feb 2007
Posts: 183
Likes: 2
Whoa! Bingo! What next?
Trending Topics
Fleet Mechanic
Joined: Aug 2015
Posts: 1,829
Likes: 363
From: Candy Mountain
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Thread Starter
|
Mountain Pass
Joined: Feb 2007
Posts: 183
Likes: 2
Thanks. Good to know. I have since noticed the door sticker/tag shows it was a Canadian build. Makes sense being that I'm in NW Montana near the boarder. One of the things that threw me off is they are so dim. I mean you can hardly see them in the day light and even in the dark it just looks like back feed through a ground. Not really doing any good.
Anything I can look at to make them brighter? Or how hard would it be to eliminate them?
Also any ideas as to why the high beam indicator does not indicate and what would cause it to flash when turning off the ignition? Maybe a combo switch issue? Not sure that it should but doesn't come on when key is on prior to cranking as a check.
Fleet Mechanic
Joined: Aug 2015
Posts: 1,829
Likes: 363
From: Candy Mountain
If you want to delete the DRL the easiest thing is to get the OE shorting bar. It plugs into the harness in place of the module.
I think this what you would want. https://www.ebay.com/itm/144677882916
I think this what you would want. https://www.ebay.com/itm/144677882916
Thread Starter
|
Mountain Pass
Joined: Feb 2007
Posts: 183
Likes: 2
If you want to delete the DRL the easiest thing is to get the OE shorting bar. It plugs into the harness in place of the module.
I think this what you would want. https://www.ebay.com/itm/144677882916
I think this what you would want. https://www.ebay.com/itm/144677882916
Fleet Mechanic
Joined: Aug 2015
Posts: 1,829
Likes: 363
From: Candy Mountain
If you continue to have problems after installing the shorting bar I would look at the multifunction switch.
As a side note the headlight switch and connector should be inspected any time you get into the dash as they are prone to overheat and melt.
As a side note the headlight switch and connector should be inspected any time you get into the dash as they are prone to overheat and melt.
Thread Starter
|
Mountain Pass
Joined: Feb 2007
Posts: 183
Likes: 2
Just wanted to follow up. Truck is fixed. Turns out it did have DLR. Module was going bad. Decided against replacing the module and purchasing the jumper connector. Worked like a charm. I'd be indicator and park brake light work as they should and headlights are working and not working when they shouldn't be. LOL