47 nash help - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Electrical
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 08-22-2010, 09:30 PM
Registered User
 

Last journal entry: A long month
Last photo:
Join Date: Aug 2010
Location: IL
Posts: 18
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
47 nash help

need help finding a wiring diagram and or firewall map for a 1947 nash ambassador series 4760 straight 6 6 volt positive ground system.
Wiring was a mess when I got the car chased and rewired what I could but now car is worse off then before. car would try to turn over, would try faster without compression, horn worked and dome light and key light worked, I rewired still worked, someone suggested that one of the loose wires hanging from bottom of distributor should be hooked up to my one "post" ignition coil (internal resisted I think) so I tried it and nothing worked wouldn't even try to turn over. so I hooked coil up the way it was, left loose wire to hang where it was and now it still will not do anything. Some lights work, horn wires have power when tested with test light, but horn will not honk. need help, can't get new "bullet conectors" to fit in old "holes". I broke a piece have no idea what the name of it is, it's on the firewall, hooked to carb and gas pedal and has four wires on it. This is my first project car on my own and older than anyone I know has worked on. need help, wiring diagram firewall map anything to do with wires electrical system. even after reading the manual I do not fully understand the positive ground thing either. Please don't laugh. I really just need help.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 08-23-2010, 11:14 AM
Joe G's Avatar
Registered user
 
Last photo:
Join Date: Nov 2008
Location: St. Paul, MN
Posts: 587
Wiki Edits: 0

Thanks: 78
Thanked 32 Times in 31 Posts
Hi, I have a wiring diagram for that car around here somewhere, But I'll need to do some digging to find it.

I wouldn't expect there to be more than one wire coming from the distributor unless maybe there is/was an electric overdrive. Since the car is positive ground, the distributor wire should go to the "+" terminal on the ignition coil. The "-" coil terminal should be wired to key on power (no ballast resistor necessary on a 6 volt system).

Bullet connectors come in three sizes:
The most common size is .156"
The least common size is .176"
The .180" size was common on old Ford products

I get these connectors here and here.

I'll get back to you on that wiring diagram when I get a chance to look for it, unless somebody beats me to it.

Good luck...
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 08-23-2010, 01:53 PM
vicrod's Avatar
life is a ride
 

Last journal entry: 2014
Last photo:
Join Date: Nov 2005
Location: Telford, PA
Age: 71
Posts: 1,306
Wiki Edits: 0

Thanks: 0
Thanked 56 Times in 52 Posts
First of all the positive ground thing. The main difference be + & - ground is the direction of electron flow thru the circuit. It doesn't matter except for DC motor rotation and possibly guage operation. All the motors and guages on that car will be already designed for correct rotation. Just think of the - wire as the HOT wire. And the + cables as the ground.

Here are some things you need to before hacking at the wiring.

Approach the wiring by system. eg; starter system, ignition system etc.
The basics are the same in all cars. Read up on them to get familiar with how these systems work. Depending on your level of understanding you may want to study basic electrical theory. Armed with this knowledge your 85% there.

Charge the battery.

The 6 volt system, more so than a 12 volt system, is not happy with bad connections.

Make sure all connections are good. Disassemble, clean, reassemble. Remove battery cables and clean.

Check the grounds. One cable from the battery + to the chassis and at least one cable from the chassis to the engine.

Check the cable from the battery - to the starter. If any of the heavy cables from the battery look corroded or nasty, replace them.

The wire that is connected to the starter stud (battery -) is the main power feed wire. It will power the fuse block.

One more wire will be connected to the starter. This is the control wire that makes the starter engage. It connects to the starter switch (ignition). I'm not sure how NASH arranged the start switch. Some cars used a button or a foot switch for a start switch. This is connection point (on the starter) where you can jumper the starter.

Get all that done. Get the engine cranking over. A heavy duty battery charger will help a lot.

Connect the ignition system as described above. Get a test light and see if the have power at the coil - stud.

Remove the spark plugs and dump a little light oil in the openings. Crank it over without the plugs loosen up the thing.

let us know how you make out.

vicrod
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 08-23-2010, 03:41 PM
Joe G's Avatar
Registered user
 
Last photo:
Join Date: Nov 2008
Location: St. Paul, MN
Posts: 587
Wiki Edits: 0

Thanks: 78
Thanked 32 Times in 31 Posts
Here is that diagram I promised you.....



Hope this helps....
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 08-23-2010, 09:13 PM
Registered User
 

Last journal entry: A long month
Last photo:
Join Date: Aug 2010
Location: IL
Posts: 18
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thank you so much, I have looked online for a month now and nothing, closest thing was a ford tractor. this will be super helpful. a thousand times over thank you!!!!!!!!! I'll keep ya'll posted on how it does.
Sarah
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 08-23-2010, 09:22 PM
Registered User
 

Last journal entry: A long month
Last photo:
Join Date: Aug 2010
Location: IL
Posts: 18
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanks everyone for all the suggestions.
I kind of dove into the electric just hate having the thing sit there and rot while I try to find info on it. I took plugs out and oiled already cranked much faster without compression (plugs in place) My coil does not read on a meter so I'm chasing one down now.
battery is new and charged but conecctions are a bit funky.
have test light and lil bro lets me borrow his fancy voltage reader.

Again thanks for all the suggestions I will get right on and keep you all posted
Thanks a million.
Reply With Quote Quick reply to this message

Recent Electrical posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last 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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Home Brew's Nash comes home! home brew Hotrodders' Lounge 75 03-25-2008 04:30 PM
$200 Nash BloodKnuckleNash Introduce Yourself 2 05-09-2007 10:20 PM
47 FORD "TITLE" ONEGALONLY Hotrodders' Lounge 8 03-10-2006 05:15 PM
'47 Nash Ambassador rebuild daanp Interior 1 01-25-2005 04:22 PM
Nash pics anyone? HemmiGremmie Hotrodders' Lounge 3 12-16-2004 05:24 PM


All times are GMT -6. The time now is 06:22 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.