Notices
1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Help Identifying Wiring

Thread Tools
 
Search this Thread
 
Old Dec 29, 2021 | 02:23 PM
  #1  
cp10h's Avatar
cp10h
Thread Starter
|
New User
Joined: Dec 2021
Posts: 7
Likes: 0
Help Identifying Wiring

91 F150 4x4 XLT Lariat, 5.0, 5 Speed

I tried searching and looking in the Haynes with no success. Also browsed through most of this without any real success. Trying to identify some wiring under my dash that I noticed isn't hooked up to anything. Wondering if the larger plug is for cruise control which I don't have?







Sorry for the potato pic, but I wanted to get the color of the wire.




Thanks in advance! Cheers
 
Reply
Old Dec 29, 2021 | 02:38 PM
  #2  
AuroraGirl's Avatar
AuroraGirl
Lead Driver
Shutterbug
Community Builder
Liked
Loved
Joined: Jun 2021
Posts: 5,221
Likes: 805
Originally Posted by cp10h
91 F150 4x4 XLT Lariat, 5.0, 5 Speed

I tried searching and looking in the Haynes with no success. Also browsed through most of this without any real success. Trying to identify some wiring under my dash that I noticed isn't hooked up to anything. Wondering if the larger plug is for cruise control which I don't have?







Sorry for the potato pic, but I wanted to get the color of the wire.




Thanks in advance! Cheers
trailer brake controller hook ups

do you have towing package(trans cooler in front of the condensor/rad, and then extra relays by the computer on the fuseb ox
 
Reply
Old Dec 29, 2021 | 02:46 PM
  #3  
cp10h's Avatar
cp10h
Thread Starter
|
New User
Joined: Dec 2021
Posts: 7
Likes: 0
Ah interesting. I know I don't have a trans cooler. I'll have to check the relays but I'm guessing I don't have em. Is this something that all the trucks would've come pre wired for? I don't know much about the history but I do know it sat with a bad trans for a few years before the previous owner put an extra m50d in he had laying around. I'd be surprised if he went to the trouble to remove the trans cooler if it previously had one.
 
Reply
Old Dec 29, 2021 | 02:54 PM
  #4  
AuroraGirl's Avatar
AuroraGirl
Lead Driver
Shutterbug
Community Builder
Liked
Loved
Joined: Jun 2021
Posts: 5,221
Likes: 805
prob cruise, rke or ther optiobs, or trailer controilers
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
abe
1948 - 1956 F1, F100 & Larger F-Series Trucks
11
Sep 6, 2021 10:21 PM
Indybeer
1948 - 1956 F1, F100 & Larger F-Series Trucks
1
Jun 6, 2021 02:56 PM
7.3 Rocket
1999 - 2003 7.3L Power Stroke Diesel
10
Mar 21, 2010 11:32 AM
mxracer3276
1999 - 2003 7.3L Power Stroke Diesel
14
Feb 22, 2010 07:11 AM
96sherm
Manitoba / Saskatchewan Chapter
31
Jul 24, 2008 11:00 PM




All times are GMT -5. The time now is 01:48 PM.

story-0
5 BEST / 5 WORST Ford Daily Drivers of the 21st Century

Slideshow: The 5 best and 5 worst Ford daily drivers of the 21st century.

By Joe Kucinski | 2026-06-23 08:55:01


VIEW MORE
story-1
10 Fords to Drive Before You Die

Slideshow: 10 Fords to drive before you die.

By Joe Kucinski | 2026-06-22 14:29:44


VIEW MORE
story-2
3 Best / Worst Features Of The 2025+ Ford Expedition

The latest Expedition is quite popular, but it certainly isn't perfect.

By Brett Foote | 2026-06-22 14:23:19


VIEW MORE
story-3
10 Ways Ford is LOSING to the Competition

Slideshow: 10 ways Ford is losing to the competition

By Joe Kucinski | 2026-06-15 09:52:01


VIEW MORE
story-4
Top 6 Best Deals Available on New Fords & Lincolns Right Now

Some great targets in today's expensive world.

By Brett Foote | 2026-06-15 09:35:19


VIEW MORE
story-5
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-6
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-7
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-8
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-9
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE