4.0 alternator wiring - JeepForum.com

 
LinkBack Thread Tools
post #1 of 3 Old 06-14-2012, 09:25 AM Thread Starter
AMC-COMMANDO
Registered User
1972 C104 
 
Join Date: May 2012
Location: Clovis
Posts: 11
4.0 alternator wiring

Installed a 93 4.0 into my 72 Jeep Commando. I need some help adapting my 72 wiring to the 93 alternator. I am using a Hesco wiring harness which has a field wire that I need to hook up. But what original wires from the Commando do I need to connect to the 93 alt? And where on the 93 alt? I have had no luck finding a wiring diagram for the 93 on the net.Really appreciate any help!!

AMC-COMMANDO is offline  
Sponsored Links
Advertisement
 
post #2 of 3 Old 06-16-2012, 06:37 PM
Always2L8
Member
1982 CJ8 
 
Join Date: Nov 2011
Location: Clearwater
Posts: 378
I have the wiring diagram from the FSM for a 1993 XJ, Cherokee in pdf format. PM me if you're interested.
Always2L8 is offline  
post #3 of 3 Old 06-20-2012, 11:05 AM
JWELK
Registered User
1999 XJ Cherokee 
 
Join Date: Apr 2011
Location: Ceiba
Posts: 910
The 72 had a separate regulator. The '93 has the regulator built into the ECM. The field wire you are referring to is the regulator wire. SOOOOOOOO on my '95 the regulator/field is pin 20 on the ECM. The other wire goes to ground.
The large output wire goes to the PDC, then to the battery. The field voltage can't be successfully measured at is a Pulse Width Modulated signal to better control the alternator. A #4 wire can be added to the alternator to run to the frame if one isn't provided.

Regards,

Jim W
JWELK is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com 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 e-mail 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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
YJ Vacum and Wiring??? forhiremarine Advanced Jeep Tech 2 02-20-2013 05:14 PM
Wiring a GM starter? EZCJ Advanced Jeep Tech 4 06-03-2012 03:35 AM
4.0 swap--VSS wiring RockScar Advanced Jeep Tech 4 03-05-2012 05:27 AM
yj wiring harness help!! liftedyj91 Advanced Jeep Tech 3 03-01-2012 08:21 PM
SBC to a YJ have wiring questions forhiremarine Advanced Jeep Tech 9 02-13-2012 05:30 PM

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 Off
Pingbacks are On
Refbacks are On

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