Notices

Alternator wiring question

Thread Tools
 
Search this Thread
 
Old Sep 9, 2003 | 11:46 AM
  #1  
_GEEZER_'s Avatar
_GEEZER_
Thread Starter
|
Senior User
Joined: Aug 2003
Posts: 229
Likes: 0
Alternator wiring question

Posted this over in the big bronco section, but got no input. Maybe someone here can help.

I am about to replace my stock 2G alternator with a 200A 3G ONE WIRE unit on my '89 Bronco. On the generator light indicator wire; (green/ red with a pin connector coming out of the old alt. plug) is there a way to bypass this so my charging light isn't always going to be on? Can I wire it right to the starter solenoid? Thanks.
 
Reply
Old Sep 9, 2003 | 02:14 PM
  #2  
Mil1ion's Avatar
Mil1ion
New User
Joined: Jan 2008
Posts: 0
Likes: 24
Alternator wiring question

Why don't you want the light to come on if there is a problem with the circuit ?
 
Reply
Old Sep 9, 2003 | 02:48 PM
  #3  
_GEEZER_'s Avatar
_GEEZER_
Thread Starter
|
Senior User
Joined: Aug 2003
Posts: 229
Likes: 0
Alternator wiring question

Oh, I do want the light to come on if there's a problem. What I'm saying is the stock alt. has 2 molex plugs connecting to it. The new alt. is a one-wire hookup (positive lead only.) There is no provision for the charging lamp indicator wire in the new setup. I am trying to figure out where to connect the green/red wire after I cut it from the old loom (which I'll no longer need,) and still have it function. Thanks.
 
Reply
Old Sep 9, 2003 | 06:23 PM
  #4  
Franklin2's Avatar
Franklin2
Moderator
25 Year Member
Photogenic
Community Builder
Community Influencer
Joined: Jan 2001
Posts: 56,973
Likes: 2,731
From: Virginia
Club FTE Gold Member
Alternator wiring question

The light will not function with a one wire alternator. The one wire alternator is just that, one wire. Unless you have a special connection on the alt for the light, it will not work. Then it would not be one wire would it? Just tape the wire off, and get a voltmeter for the dash.
Make sure you upgrade the rest of your wiring, or you will see no advantage to the high output alt. By this I mean the wire from the alt to the starter relay/battery connection should be very heavy like a #8 or #6 wire. And whatever you need all this output for should be connected with heavy wires to that same spot, or a heavy aux fuse box should be connected to that same spot. If you tack on a heavy load somewhere else in the original harness, you won't see much advantage to the alt because the original wiring is too small for the alt to "see" the load and feed it.
 
Reply




All times are GMT -5. The time now is 06:44 AM.

story-0
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-1
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-2
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-3
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-4
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-5
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-6
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-7
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-8
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-9
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE