Mystery Leads?
Thread Starter
|
Freshman User
Joined: Sep 2009
Posts: 30
Likes: 0
Mystery Leads?
Can anyone help me identify what these two leads are for on a '96 F-250 with the 4.9 inline 6? The two leads are circled in yellow in the photo and they both come from a common point in the engine wiring harness just downstream from the distributor, which is circled in green.
I just bought the truck and am still working on getting it running right. I have the distributor replaced, and suspect that I may need to replace the alternator due to the battery light staying on (the old battery was weak and I already put a new battery in).
Thanks,
John
I just bought the truck and am still working on getting it running right. I have the distributor replaced, and suspect that I may need to replace the alternator due to the battery light staying on (the old battery was weak and I already put a new battery in).
Thanks,
John
Tuned
Joined: Jun 2005
Posts: 288
Likes: 0
From: Okanagan
What colours are the wires? I can't see them very well.
EDIT: Looks like one wire is a red/yellow, and that the lead is capped off. If so, that's for your dual fuel tanks, which I am guessing you don't have and why its capped.
EDIT: Looks like one wire is a red/yellow, and that the lead is capped off. If so, that's for your dual fuel tanks, which I am guessing you don't have and why its capped.
Thread Starter
|
Freshman User
Joined: Sep 2009
Posts: 30
Likes: 0
I have the dual tanks, and in fact, am changing the rear tank tomorrow because it leaks. I found a powder coated 19 gallon rear tank on eBay for $80, including shipping.
The inside of both of the leads are red and neither of them are capped.
Thanks,
John
The inside of both of the leads are red and neither of them are capped.
Thanks,
John
Thread Starter
|
Freshman User
Joined: Sep 2009
Posts: 30
Likes: 0
OK I'm back - I was underneath the truck all day yesterday changing out the rear tank - it wasn't fun, but I got it.
Anyway, here are the details on the wires., One of the leads is a round, four-pin connector. It has two wires coming into it. One wire is green with a red stripe, and the other is red with a yellow stripe.
The other connector is rectangular and also has two wires coming into it. One wire is grey and the other is black.
John
Anyway, here are the details on the wires., One of the leads is a round, four-pin connector. It has two wires coming into it. One wire is green with a red stripe, and the other is red with a yellow stripe.
The other connector is rectangular and also has two wires coming into it. One wire is grey and the other is black.
John
Tuned
Joined: Jun 2005
Posts: 288
Likes: 0
From: Okanagan
Searched around... found the green/red wire could be for... brake warning indicator (cruise control), an alternator connection (doubtful since you don't have charging issues) or possibly the daytime running light module (do you have them?).
The red/yellow seems more elusive. It's fuel relay related or connected to your headlight dimmer switch.
It makes me think that it should go to a DRL module. Subford should be able to clarify.
The Black & Grey seems like a connection to the A/C compressor clutch. Was A/C included on your truck?
EDIT: Yay! 100th post!
The red/yellow seems more elusive. It's fuel relay related or connected to your headlight dimmer switch.
It makes me think that it should go to a DRL module. Subford should be able to clarify.
The Black & Grey seems like a connection to the A/C compressor clutch. Was A/C included on your truck?
EDIT: Yay! 100th post!
Last edited by Elderstarr; Sep 15, 2009 at 12:10 PM. Reason: EDIT: Yay! 100th post!
Thread Starter
|
Freshman User
Joined: Sep 2009
Posts: 30
Likes: 0
The last owner changed the alternator, and although it seems to be charging, the battery light is on, so you may have something with that one.
I don't have A/C.
I really appreciate your help. I would love to get rid of that battery light ;-)
John
I don't have A/C.
I really appreciate your help. I would love to get rid of that battery light ;-)
John
Trending Topics
Tuned
Joined: Jun 2005
Posts: 288
Likes: 0
From: Okanagan
Be sure and check the battery voltage directly when running, it should be 14-15v. If that green/red wire to the alternator is not connected, you would not be charging at all.
The previous owner may have even changed the alternator thinking that it was the reason for not charging. You're sure there is no other plug hiding which should fit?
The yellow/red wire I still cannot find. I have a 91 harness, a bit different from yours.
The previous owner may have even changed the alternator thinking that it was the reason for not charging. You're sure there is no other plug hiding which should fit?
The yellow/red wire I still cannot find. I have a 91 harness, a bit different from yours.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
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
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
Posting Guru
Joined: Jul 2009
Posts: 1,069
Likes: 1
From: Toledo, Ohio
The A/C plug has 2 prongs or whatever with 2 wires and the plug has a little raised notch on it. So, I think that would be the easiest way to tell if its the A/C one.
Just putting in my 2 cents. ;}
Just putting in my 2 cents. ;}
Thread Starter
|
Freshman User
Joined: Sep 2009
Posts: 30
Likes: 0
I'll check on the A/C plug. Do you think though, that they'd have an empty A/C plug dangling there if the truck doesn't have A/C?
I checked the alternator output and it's low. I'll probably have to replace it, too...
I checked the alternator output and it's low. I'll probably have to replace it, too...
Senior User
Joined: Jul 2005
Posts: 347
Likes: 0
From: USCGC Never Home
Yes they would.
