Turn signals
Elder User
Joined: Jul 2001
Posts: 581
Likes: 2
From: Milton, Wa
Turn signals
I am having some problems with my right hand turn signal on my '78 F250 Ranger Supercab 4x4.
When the headlight switch is in the "Off" position everything works normal.
When the headlight switch is in the "on" position, the RH turn signal dash indicator light is always on and the it blinks very slow.
What would cause this?
When the headlight switch is in the "Off" position everything works normal.
When the headlight switch is in the "on" position, the RH turn signal dash indicator light is always on and the it blinks very slow.
What would cause this?
Posting Guru
Joined: Jun 1999
Posts: 2,415
Likes: 3
From: Comox Valley, Canada
Turn signals
I am having some problems with my right hand turn signal on my '78 F250 Ranger Supercab 4x4.
When the headlight switch is in the "Off" position everything works normal.
When the headlight switch is in the "on" position, the RH turn signal dash indicator light is always on and the it blinks very slow.
What would cause this?
When the headlight switch is in the "Off" position everything works normal.
When the headlight switch is in the "on" position, the RH turn signal dash indicator light is always on and the it blinks very slow.
What would cause this?
Check/clean/ or replace as required the grounds for the RH turn signal/headlight. Should be on or near the rad mount. Couple of black wires. Also check the ground pin inside the turn signal bulb socket.
Most likely it is the socket assembly itself. Bad ground contact, so the running light is using a "floating" ground thru the signal light circuit. Which causes the dash indicator to glow.
Sparky
Lead Driver
Joined: Feb 2000
Posts: 5,373
Likes: 46
From: Palm Bay, Florida
Turn signals
Interesting to hear that others are having the same problem with the infamous Ford plastic light sockets that I've had for years, not just on trucks, but Ford cars as well, where do you get a good cheap replacement (new)?-my answer so far has been Pep Boy's for close to $20.00 each!!!!!!!!! otherwise its been the discount parts store (very cheaply made)for around $4.00 each.
Trending Topics
Moderator
Joined: Jan 2001
Posts: 56,966
Likes: 2,728
From: Virginia
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
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
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Elder User
Joined: Aug 1999
Posts: 910
Likes: 0
Turn signals
This has happened to me w/ both my 76 and my 79 multiple times, everytime replacing the bulb socket fixed the problem. The old ones just get old. I'm not replacing the replacements, just one by one replaceing the old ones.
BBT
BBT
Thread
Thread Starter
Forum
Replies
Last Post