frame trailer connector color code
Thread Starter
|
Cross-Country
Joined: Apr 2016
Posts: 66
Likes: 1
frame trailer connector color code
Hi, can anyone tell me what the red wire is for?
Wasn´t able to get any hint what it does.
Green and green/black is turn, yellow is marker lights.
Truck is 1984 F250 Supercab 4x4 Diesel, the connector is located behind the rear fuel tank close to the bumper.
Thank you.
Wasn´t able to get any hint what it does.
Green and green/black is turn, yellow is marker lights.
Truck is 1984 F250 Supercab 4x4 Diesel, the connector is located behind the rear fuel tank close to the bumper.
Thank you.
FTE Legend
Joined: Nov 2015
Posts: 30,948
Likes: 4,126
From: Angier, NC
Yea I would check for power on it and if it does when this happens like when backing up, etc.
Does the truck have a electric brake controller? I don't think so as they came out a few years later.
Any way if you have the left brake/turn, right brake/turn, running lights.
The only others I can think of would be ground (most of the time it is white or black on the trailer), back up light.
If it had a trailer pk then could have trailer brake & a power line to charge a batt. on the trailer. Most of the time the brake & power are heavier gauge wire.
That is all I can think of at this time.
Dave ----
Does the truck have a electric brake controller? I don't think so as they came out a few years later.
Any way if you have the left brake/turn, right brake/turn, running lights.
The only others I can think of would be ground (most of the time it is white or black on the trailer), back up light.
If it had a trailer pk then could have trailer brake & a power line to charge a batt. on the trailer. Most of the time the brake & power are heavier gauge wire.
That is all I can think of at this time.
Dave ----
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
Trailer brake lamps, but only if you have the trailer brake controller installed: Trailer Option - ???Gary's Garagemahal.
Moderator
Joined: Jan 2001
Posts: 56,999
Likes: 2,747
From: Virginia
Trailer brake lamps, but only if you have the trailer brake controller installed: Trailer Option - ???Gary's Garagemahal.
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
Dave - The red looks to have a stripe, which could be green. So, that would be a match. And there looks to be a white and a yellow. But the 4th wire doesn't appear to be black. But, 3 out of 4 seem to match. What am I missing?
Having said that, yes Ford's trailer wiring was a mess in that era. And the EVTM doesn't really answer all the questions. But, if the OP would check those wires he might discover that three of the four are correct.
On the other hand, if the rest of the wiring has been done the way the blue/white ground in the right of the picture was done then there's no hope.
Having said that, yes Ford's trailer wiring was a mess in that era. And the EVTM doesn't really answer all the questions. But, if the OP would check those wires he might discover that three of the four are correct.
On the other hand, if the rest of the wiring has been done the way the blue/white ground in the right of the picture was done then there's no hope.
Moderator
Joined: Jan 2001
Posts: 56,999
Likes: 2,747
From: Virginia
Trending Topics
Cargo Master
Joined: Jun 2013
Posts: 3,182
Likes: 15
From: Somewhere n North America
crawlin-kingsnake - if you are willing, you could un-tape the other side of the connector and verify colors there.
I have an 84' EVTM at the house, when I get back in town on wed, I'll post, if not resolved by then.
I have an 84' EVTM at the house, when I get back in town on wed, I'll post, if not resolved by then.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Thread Starter
|
Cross-Country
Joined: Apr 2016
Posts: 66
Likes: 1
Well, I checked the colors and I was wrong due to fading.
Correct (at least what I can tell now) is:
Light green/black (thicker gauge than the rest)
Red/black
Light green/white
White/light blue
I have to check if the red/bk is backup which I assume from your answers.
The blue/white "ground" wire you see in the pic was just for quick testing with a bulb to ground to see what wire does what. It was better visible from the cab than the meter
Correct (at least what I can tell now) is:
Light green/black (thicker gauge than the rest)
Red/black
Light green/white
White/light blue
I have to check if the red/bk is backup which I assume from your answers.
The blue/white "ground" wire you see in the pic was just for quick testing with a bulb to ground to see what wire does what. It was better visible from the cab than the meter
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
No, I don't think red/black is backup as those should be black/pink.
Try Page 49 here: Lights: - ???Gary's Garagemahal. From that I deduce:
Try Page 49 here: Lights: - ???Gary's Garagemahal. From that I deduce:
- Your white/light blue is actually orange/light blue, and that is right stop/turn
- Your light green/white is actually light green/orange which is left stop/turn
- Your red/black I haven't found
- Your light green/black I haven't found
Thread
Thread Starter
Forum
Replies
Last Post