4x4 indicator light
Thread Starter
|
4wd Low
Joined: May 2023
Posts: 12
Likes: 1
4x4 indicator light
Yo!
I had a weird melting of wires under my dash, my fault... Totally a different story!
It melted very few wires but the one that pisses me off is the 4WD indicator light...
It mounts below the dash and glows a blue 'LOCKED' panel when in 4x4....
I've never seen another F100 with this light and neither has anyone else I've asked?
The wiring harness has a Ford tag that reads: D5TB 13 A705 AD..... Those are open to interpretation as the tag is pretty toast!
Any help?!
1976 F100 4x4 shorty. 390(now) auto
I had a weird melting of wires under my dash, my fault... Totally a different story!
It melted very few wires but the one that pisses me off is the 4WD indicator light...
It mounts below the dash and glows a blue 'LOCKED' panel when in 4x4....
I've never seen another F100 with this light and neither has anyone else I've asked?
The wiring harness has a Ford tag that reads: D5TB 13 A705 AD..... Those are open to interpretation as the tag is pretty toast!
Any help?!
1976 F100 4x4 shorty. 390(now) auto
More Turbo
Joined: Jun 2020
Posts: 648
Likes: 394
From: Montana
Those were for trucks with the fulltime NP203 transfer case. I'm not sure if all of those trucks had them or not. It's not mine, but there may be one on ebay right now. https://www.ebay.com/itm/23565939237...Bk9SR6T-9cOjZA
Thread Starter
|
4wd Low
Joined: May 2023
Posts: 12
Likes: 1
Just bought it! Thanks!
Full time NP203, my F100 is not full time, at least what I'm thinking of...
It's got low range, high range and neutral. Am I being dumb?
Now I gotta hope my light isn't toast!
Full time NP203, my F100 is not full time, at least what I'm thinking of...
It's got low range, high range and neutral. Am I being dumb?
Now I gotta hope my light isn't toast!
Last edited by hwprouty; Aug 4, 2024 at 10:41 AM. Reason: added text
Hotshot
Joined: Feb 2004
Posts: 10,836
Likes: 2,612
From: The Shenandoah Valley
NP 203 is "full time" ... it is the chain drive one that has a means through an internal differential of allowing different front vs rear drive shaft speeds so it can always be in a 4wd mode, the 4wd selector serves to lock front and rear drive shafts to the same speed. Unless modified by kit, the NP 203 always puts power to both front and rear drive shafts.
NP 205 has no light ... NP 203 has the light because if a driver forgets and leaves the 4wd locked, there are no locking hubs OEM, and road use will ruin it .... just like if a NP 205 were left in 4hi or 4lo with hubs locked.
A truck with a NP 203 in unlocked mode and which has open front and rear differentials can have just one wheel on ice (example) and not be able to move away from a pole as the one wheel spins on the ice.
Thread Starter
|
4wd Low
Joined: May 2023
Posts: 12
Likes: 1
So I may have a 203 with locking hubs? Good gawd I thought I knew what I had!
I've had this truck for over 30 years! LOL.
What is a for sure way to check which I have? I can easily look under the truck...
I've had this truck for over 30 years! LOL.
What is a for sure way to check which I have? I can easily look under the truck...
Hotshot
Joined: Feb 2004
Posts: 10,836
Likes: 2,612
From: The Shenandoah Valley
This is instruction with NP-203 Full Time
This is instruction with NP-205 Part Time
***** look different too
I do not have a picture of a NP-203, but it looks a good deal different than a NP-205 (below). Case differs because 203 uses a chain, not just gears like a 205.
More Turbo
Joined: Jun 2020
Posts: 648
Likes: 394
From: Montana
Trending Topics
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
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
Top 10 Ford Truck Tragedies
Joe Kucinski
Thread Starter
|
4wd Low
Joined: May 2023
Posts: 12
Likes: 1
Looks like a NP 203! You can see where the wire connects in the 5th picture!
Thanks for the replies guys!
I need to order an assembly manual, can anyone find a part number for the indicator light by chance?
Thanks for the replies guys!
I need to order an assembly manual, can anyone find a part number for the indicator light by chance?
Thread
Thread Starter
Forum
Replies
Last Post
Scoop531
1973 - 1979 F-100 & Larger F-Series Trucks
14
Feb 4, 2014 04:05 PM
bocco
Clutch, Transmission, Differential, Axle & Transfer Case
1
Aug 4, 2005 11:48 AM