Notices

alternator wiring question

Thread Tools
 
Search this Thread
 
Old Sep 3, 2004 | 03:22 PM
  #1  
weldingfreak's Avatar
weldingfreak
Thread Starter
|
Tuned
Joined: Feb 2004
Posts: 330
Likes: 0
From: Missouri
alternator wiring question

I have an 1984 F-250 w/460 wanting to know about where the wires go to my alternator. the way it was hooked up It has 3 wires, power wire black I think an blue orange wire and an white and black wire. well the white and black wire is not hooked up but the truck apears to be charging ok the wire is hooked up to the alternator but the other end is not hooked up to anything. What is it supposed to be hooked up to.
 
Reply
Old Sep 3, 2004 | 04:36 PM
  #2  
sparky's Avatar
sparky
Posting Guru
25 Year Member
Joined: Jun 1999
Posts: 2,415
Likes: 3
From: Comox Valley, Canada
The leftover wire is for the electric choke.......optional if you do not need it you can remove it.
 
Reply
Old Sep 3, 2004 | 04:46 PM
  #3  
weldingfreak's Avatar
weldingfreak
Thread Starter
|
Tuned
Joined: Feb 2004
Posts: 330
Likes: 0
From: Missouri
Ok I have an 12v holley choke on the truck now run off an (hot in run) fuse in the fuse box
 
Reply
Old Sep 3, 2004 | 06:45 PM
  #4  
Franklin2's Avatar
Franklin2
Moderator
25 Year Member
Photogenic
Community Builder
Community Influencer
Joined: Jan 2001
Posts: 57,025
Likes: 2,756
From: Virginia
Club FTE Gold Member
Originally Posted by weldingfreak
Ok I have an 12v holley choke on the truck now run off an (hot in run) fuse in the fuse box
Leave it hooked up that way. I have never tested it, but have heard the black/white wire from the alt has only about 8 volts.
 
Reply
Old Sep 4, 2004 | 08:19 AM
  #5  
65CJ5's Avatar
65CJ5
Senior User
Joined: Feb 2004
Posts: 112
Likes: 0
Originally Posted by Franklin2
Leave it hooked up that way. I have never tested it, but have heard the black/white wire from the alt has only about 8 volts.
That's correct. The wire from the alt is coming off the stator and should be about half operating voltage, or about 7V. The original ford chokes used that since that voltage is only present when the engine is actually running. That way you are not heating up your electrically-assisted choke thermostat if you happen to have the key on. Running 12V to one of those original ford units can burn it out.

Stan
 
Reply
Old Sep 4, 2004 | 06:53 PM
  #6  
weldingfreak's Avatar
weldingfreak
Thread Starter
|
Tuned
Joined: Feb 2004
Posts: 330
Likes: 0
From: Missouri
but5 I could hook it up to an relay so I could run items that only need power in run only, like the ckoke so I can have that space back in the fuse box for the trailer brakes
 
Reply
Old Sep 4, 2004 | 09:39 PM
  #7  
Franklin2's Avatar
Franklin2
Moderator
25 Year Member
Photogenic
Community Builder
Community Influencer
Joined: Jan 2001
Posts: 57,025
Likes: 2,756
From: Virginia
Club FTE Gold Member
Originally Posted by weldingfreak
but5 I could hook it up to an relay so I could run items that only need power in run only, like the ckoke so I can have that space back in the fuse box for the trailer brakes
Yes, you most certainly could. You may have to do some figuring on the relay though, since most common relays run on 12 volts, or 24 volts. You may be able to find a small computer type relay that runs on 5 volts, and then let it drive a more substantial 12 volt automotive relay.
 
Reply




All times are GMT -5. The time now is 02:06 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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
story-7
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-8
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-9
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE