Go Back   Mopar Forums > GENERAL > Transmissions, Transfer Cases and Rear Ends
Sign in using an external account
Register Forgot Password?
Search

Reply
 
 
 
submit to reddit
 
LinkBack Thread Tools Search this Thread Display Modes
Old 07-11-2011, 03:33 PM   #1
New Member
 
Join Date: Jul 2011
Location: Laredo, Texas
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Neutral Safety Switch wiring on 727?

I have a 77 power wagon with a 727 transmission that i'm having trouble with. When i bought it, there were no wires connecting to the NSS. I am aware that the center prongue is for the NS, and the outer two are for the backup lights. From what i can see the the wire that goes to the center is grounded to the frame which displays why the truck starts. I don't know what to connect to the outer two prongues. I've tested the lights and they do work. I'm just having trouble with the wiring. Anybody out there willing to help out?
Derek77PW is offline   Reply With Quote
Old 07-11-2011, 03:42 PM   #2
Super Moderator
 
bremereric's Avatar
 
Join Date: Sep 2010
Location: Houston, Texas
Posts: 3,610
Thanks: 21
Thanked 180 Times in 169 Posts
Quote:
Originally Posted by Derek77PW View Post
I have a 77 power wagon with a 727 transmission that i'm having trouble with. When i bought it, there were no wires connecting to the NSS. I am aware that the center prongue is for the NS, and the outer two are for the backup lights. From what i can see the the wire that goes to the center is grounded to the frame which displays why the truck starts. I don't know what to connect to the outer two prongues. I've tested the lights and they do work. I'm just having trouble with the wiring. Anybody out there willing to help out?
If you don't get an answer by tonight I can help you...just so happen to have that electric service manual..

Click the image to open in full size.
__________________
1977 Dodge Aspen R/T...318 with four speed tranny....8 1/4 rear with 355 gears....20,828 original miles...



1968 Dodge Dart 440....final lift .580 roller motor...8 3/4" rear with 355 Auburn posi unit..727 tranny with reverse manual valve body what a blast to drive....

bremereric is offline   Reply With Quote
Old 07-11-2011, 04:07 PM   #3
New Member
 
Join Date: Jul 2011
Location: Laredo, Texas
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
That would be awesome. I've been messing with it for a while and can't seem to get it.
Derek77PW is offline   Reply With Quote
Old 07-11-2011, 06:33 PM   #4
Super Moderator
 
MReeves's Avatar
 
Join Date: Jul 2009
Location: DeLeon Springs, Florida
Posts: 4,520
Thanks: 60
Thanked 115 Times in 113 Posts
The center post is the ground for the starter relay. I know the other two are for the Back-up lights... But don't use them on a race car so I don't know where they go...
__________________
MReeves
STK 2377 2011 Challenger Drag Pak 426
SST 2377 1968 Barracuda Formula S
MReeves is offline   Reply With Quote
Old 07-11-2011, 08:24 PM   #5
Mopar Lover
 
Join Date: Apr 2011
Posts: 3,392
Thanks: 0
Thanked 318 Times in 313 Posts
Wiring should go from the trans plug to a 3 prong plug in the harness. Brown wire for neutral switch. white wire and black wire to the back up circuit. BK- brown wire to a 9pin bulkhead connector white or black/red wire to the fuse block #6 ?
TVLynn is offline   Reply With Quote
Old 07-11-2011, 09:00 PM   #6
Super Moderator
 
bremereric's Avatar
 
Join Date: Sep 2010
Location: Houston, Texas
Posts: 3,610
Thanks: 21
Thanked 180 Times in 169 Posts
Not much help to you because my manuals are for passenger cars..I however would think that car and truck wiring harnesses are similair...look for a three plug connector the passenger side...that's where it was in my car...if yours is missing they must have really hacked the wiring harness...the outside two pins pass a fused positive twelve volts from the bulkhead connector and back through to the body wiring going to the back end..here this may help...

http://www.amazon.com/DODGE-100-800-.../dp/B0007IN9DA

__________________
1977 Dodge Aspen R/T...318 with four speed tranny....8 1/4 rear with 355 gears....20,828 original miles...



1968 Dodge Dart 440....final lift .580 roller motor...8 3/4" rear with 355 Auburn posi unit..727 tranny with reverse manual valve body what a blast to drive....

bremereric is offline   Reply With Quote
Old 07-11-2011, 11:28 PM   #7
New Member
 
Join Date: Jul 2011
Location: Laredo, Texas
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
You are definitely correct about the hacked part. I'm pretty much starting from scratch (meaning the NSS with no connector) with the wiring so there are no colors involved besides black and red. I'm going to go ahead and bypass the middle pin due to what the previous owner already did. So from what I can understand, should the wire leading to the actual lights themselves be connected to one outer pin, while another wire coming from the fuse box (power) connects to the other outer pin?
Derek77PW is offline   Reply With Quote
Old 07-15-2011, 08:36 PM   #8
Mopar Fanatic
 
bboogieart's Avatar
 
Join Date: Jan 2011
Posts: 391
Thanks: 0
Thanked 5 Times in 5 Posts
You say " the truck starts."
and " I've tested the lights and they do work."

I'm not sure what you are trying to fix.
If it werks,
why not just leave a sleeping dog lye, no?

If you need more help let me know I have a 77 van should be the same harness.
And a 76 and a 78 truck, I could get ya some pic's or ask for specifics and I can have a look see.
__________________
I am not lost and spaced.
I have mechanical aptitude.
I can screw up anything.

Last edited by bboogieart; 07-15-2011 at 08:39 PM.
bboogieart is offline   Reply With Quote
Old 07-16-2011, 09:33 AM   #9
Super Moderator
 
bremereric's Avatar
 
Join Date: Sep 2010
Location: Houston, Texas
Posts: 3,610
Thanks: 21
Thanked 180 Times in 169 Posts
Quote:
Originally Posted by Derek77PW View Post
You are definitely correct about the hacked part. I'm pretty much starting from scratch (meaning the NSS with no connector) with the wiring so there are no colors involved besides black and red. I'm going to go ahead and bypass the middle pin due to what the previous owner already did. So from what I can understand, should the wire leading to the actual lights themselves be connected to one outer pin, while another wire coming from the fuse box (power) connects to the other outer pin?
Yep
__________________
1977 Dodge Aspen R/T...318 with four speed tranny....8 1/4 rear with 355 gears....20,828 original miles...



1968 Dodge Dart 440....final lift .580 roller motor...8 3/4" rear with 355 Auburn posi unit..727 tranny with reverse manual valve body what a blast to drive....

bremereric is offline   Reply With Quote
Old 07-16-2011, 09:33 AM
MoparForums
1970 Dodge Challenger




Paid Advertisement
 
 
 
submit to reddit
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Neutral Switch 68 uwekoch C-Body 11 08-09-2012 03:26 AM
94 Intrepid - neutral switch? ignition switch? dorseyh Intrepid/Concord/Vision/300M 5 08-22-2009 11:27 PM
Does a 73 Roadrunner (4) speed have a nuetral safety switch?? 73Roadrunner340 General Technical Questions 1 08-14-2009 10:48 AM
Neutral Safety Switch Location?? Dave MoorePower B-Body 7 08-11-2008 06:59 AM
727 neutral safety switch??? hemihead A-Body 2 03-18-2008 04:23 PM


All times are GMT -7. The time now is 07:55 PM.


Advertising - Privacy Statement - Terms of Service - Jobs