Battery in trunk, bat disconnect switch NHRA - Vintage Mustang Forums
Vintage Mustang Forum
HomeForumGalleryClassifiedsAbout UsAdvertiseContact Us
» Auto Insurance
» Featured Product
Go Back   Vintage Mustang Forums > General Discussion > Vintage Mustang Forum
Vintage-Mustang.com is the premier Ford Mustang Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools
Old 12-04-2001, 01:00 PM   #1 (permalink)
Senior Member
 
Join Date: May 2001
Location: Phoenix, Arizona
Posts: 186
Default

I relocated my battery in the trunk, but, in order to drag the car, I have to have a battery disconnect switch located on the back of the car which will kill the car when you disconnect the positive battery cable. This cannot work with stock 3-wire alternator, as the power for the alternator goes directly to the starter solenoid. When the car is running, you can totally disconnect the battery from the car, it will stay running, I know because I tried it.

With a 1-wire alternator, it will work because the alternator connects directly to the battery, not the starter solenoid. With the mustang, if I disconnect the power wire from the alternator to the solenoid, I can then start the car and run it off the battery, and then disconnect the battery to kill the car. Obviously, I cannot run the car like this as the battery would not be able to run the car very long without being recharged. I don't know if I can run the wire from the alternator all the way back and connect it directly to the battery or not, plus, I don't want to do this.

Does anybody know of any other solutions, or what other people are doing?
__________________
69 Mach 1, 393 EFI Stroker, AODE
http://memimage.cardomain.com/member...299_5_full.jpg
alaroque is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 12-04-2001, 01:11 PM   #2 (permalink)
Supporting Member
Senior Member
 
Midlife's Avatar
 
Join Date: Jul 2000
Location: Panama City, FL
Posts: 18,978
Default

Disconnecting the negative side of the battery should do the trick.
__________________
http://midlife66.com/miscfiles/traylersmiley2.gifhttp://midlife66.com/miscfiles/hotshots.jpg
http://midlife66.com/miscfiles/hotshots.jpg[

'Electrical Guru: Let me Check Your Shorts! Ooops...that didn't turn out right.

MCA Historian
Midlife is offline   Reply With Quote Quick reply to this message
Old 12-04-2001, 01:31 PM   #3 (permalink)
Senior Member
 
Join Date: May 2001
Location: Phoenix, Arizona
Posts: 186
Default

If your talking about with the stock setup, it doesn't, I tried. The alternator is supplying all the power to the motor once its started, I totally disconnected the battery from the car, I could have taken it out of the trunk, and the car still runs and drives fine.
__________________
69 Mach 1, 393 EFI Stroker, AODE
http://memimage.cardomain.com/member...299_5_full.jpg
alaroque is offline   Reply With Quote Quick reply to this message
Old 12-04-2001, 01:37 PM   #4 (permalink)
Senior Member
 
Join Date: Aug 2002
Location: Charleston, South Carolina
Posts: 680
Default

Not an electrician, so can't help much, but, i have seen lots of relocated batterys and they sometimes move the solinoid to trunk next to the battery. Maybe this will help.....
__________________
If you are going to be dumb, you got to be tough.
'70 Mustang Fastback,460 powered
(SC)
[image]http://www.southernmustangandford.com/IMG_3807.JPG[image]
fordnut is offline   Reply With Quote Quick reply to this message
Old 12-04-2001, 02:06 PM   #5 (permalink)
Senior Member
 
gt350clone's Avatar
 
Join Date: Aug 2002
Location: KANSAS!
Posts: 5,200
Default

HERE YOU GO. It's called a shutdown relay:

"Even with your master disconnect turned off, your engine may continue to run due to alternator feed back. This relay is installed between the alternator and the battery. When the master disconnect is switched off, the relay is de-energized and stops current flow to the ignition system. Includes all hardware and installation instructions.


If the above link doesn't work - go to http://www.jegs.com and look at part # 764-50103. It's made by Painless Wiring and runs $37.99.
__________________
http://www.sunflower.com/~luckybug/images/banner.jpg
Ye old 65 Clone - www.gt350clone.com (Car & Tech Pages)
The young stud - www.MySaleen.com
gt350clone is offline   Reply With Quote Quick reply to this message
Old 12-04-2001, 03:14 PM   #6 (permalink)
Senior Member
 
Join Date: May 2001
Location: Phoenix, Arizona
Posts: 186
Default

Just a question though, will this work for a non 1-wire alternator such as a stock ford mustang one. I can see how this would work for a 1-wire alternator which connects directly to the battery, but with the stock ford alternator, it does not hook up to the battery, it hooks up to the starter solenoid. Would this device then be installed between the alternator and the starter solenoid? If you are not sure, I can call Painless Tech line if they have one and ask them.
__________________
69 Mach 1, 393 EFI Stroker, AODE
http://memimage.cardomain.com/member...299_5_full.jpg
alaroque is offline   Reply With Quote Quick reply to this message
Old 12-04-2001, 03:44 PM   #7 (permalink)
Senior Member
 
gt350clone's Avatar
 
Join Date: Aug 2002
Location: KANSAS!
Posts: 5,200
Default

My understanding is that it installs in the "hot" line from the alternator. You can contact them to verify:

800-423-9696
tech@painlessperformance.com
__________________
http://www.sunflower.com/~luckybug/images/banner.jpg
Ye old 65 Clone - www.gt350clone.com (Car & Tech Pages)
The young stud - www.MySaleen.com
gt350clone is offline   Reply With Quote Quick reply to this message
Old 12-04-2001, 08:05 PM   #8 (permalink)
Senior Member
 
Join Date: Mar 2001
Location: east Texas
Posts: 1,667
Send a message via Yahoo to Hottarod
Default

I ran a 6 gauge wire from the switched side of my battery disconnect(the battery post side) up to the alternator wire that used to go to the solenoid and junctioned the two wires together. I think that will shut it all off. The basic situation is that you have to isolate the alternator charge wire from the rest of your electrical system or the alternator will carry enough current on the charge circuit to keep the motor running through feed back.
__________________
Sheila, 1965 289 mustang 2 + 2
http://www.fordmuscle.com/pictures/H.../macstang6.jpg
Hottarod is offline   Reply With Quote Quick reply to this message
Old 12-04-2001, 09:46 PM   #9 (permalink)
Senior Member
 
Join Date: May 2001
Location: Phoenix, Arizona
Posts: 186
Default

That is what I was planning to do, I was still wondering if it would charge the battery, and I can't see why it would not. Thanks for confirming for me it can be done and all works OK.
__________________
69 Mach 1, 393 EFI Stroker, AODE
http://memimage.cardomain.com/member...299_5_full.jpg
alaroque is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Vintage Mustang Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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:

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

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 On
Trackbacks are On
Pingbacks are On
Refbacks are Off


Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 10:25 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.