Alternator wiring - where did i go wrong!? - Dodge Cummins Diesel Forum

89-93 Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect...NO ADVERTISING

 
LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old 11-30-2011, 06:36 PM Thread Starter
Cummins Fanatic
 
1971ford's Avatar
 
Join Date: Sep 2011
Posts: 149
Thanks: 1
Thanked 11 Times in 10 Posts
iTrader Score: 0 reviews
Alternator wiring - where did i go wrong!?

ok I need the alternator working by tomorrow or i will be sad face!

I have the dodge cummins alternator, and my ford regulator.
The ford regulators are popular to swap onto cummins trucks as well.

I wired it up but when i put the tester on the solenoid it only reads 12 volts...

I wired it like this
http://www.cumminsforum.com/forum/94-98 ... -02-a.html

So the alternator has one big stud on the back and two small studs.
I connected the big stud to the A blade on the regulator with a huge gauge wire.
I connected one of the little studs (Read it doesn't matter which one you use) to the F blade.
I connected the other little stud directly to the alternator for a ground. It's just 1" of wire going from stud to alternator ground.
I connected the S blade on the regulator to the fat wire that runs down the inner fender that goes to the ignition switch because in that link it says to run the S blade to the ignition hot wire. I guess that would be this big wire..
But then obviously the ignition needs power! So I hooked these wires (S blade and big ignition switch wire) up to the positive cable peg on the solenoid. So now the truck starts and has full power but I'm not getting anything over 12.2 volts.

Where did i go wrong


1969 F250 4x4 Frame off rebuild
1st Gen Cummins powered
1971ford is offline  
Sponsored Links
Advertisement
 
Sponsored Links
Advertisement
 
post #2 of 2 (permalink) Old 12-01-2011, 07:03 AM
Diesel Head
 
Join Date: May 2011
Location: northeast Ohio
Posts: 1,975
Thanks: 52
Thanked 335 Times in 263 Posts
iTrader Score: 0 reviews
Or do it easier and install a Dodge regulator. 3 wires: 1 charge to batt, 1 keyed power, 1alt field. Case of regulator gets grounded, other field terminal on alt gets grounded, alternator case gets grounded.

For what you have it almost sounds like you're running charging curremnt through the regulator? And you may also have the regulator hooked to a wire that is always hot?
Ruderunner is offline  
Sponsored Links
Advertisement
 
Closed Thread

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Dodge Cummins Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome