How many volts at the coil for a ford points system - Hot Rod Forum : Hotrodders Bulletin Board -- 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
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 09-03-2005, 08:18 PM
junkyardjeff's Avatar
Last photo:
Join Date: Jun 2004
Location: Dayton Ohio
Age: 56
Posts: 273
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
How many volts at the coil for a ford points system

I was looking at the points in my 65 galaxie and noticed they looked kind of burnt,I put them in last summer and they only have about 3500 miles on them so I checked the volts going to the coil and I am getting 12. Does Fords have a resistance wire like GM or is resistance in the coil,I had replaced the coil last summer with one from a discount parts store for a 65 galaxie but I am wondering if using a aftermarket coil should I put in a resistor. Jeff

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 09-04-2005, 02:26 AM
docvette's Avatar
Registered User
Last wiki edit: Rebuild an alternator Last photo:
Join Date: Mar 2004
Location: Lafayette, california
Age: 64
Posts: 7,360
Wiki Edits: 12

Thanks: 0
Thanked 7 Times in 4 Posts

Doc here,

Remove the Dizzy cap, use a jumper and short out the points gap.

Turn the key on and measure the coil voltage at the coil SHOULD read between 6 to 9 volts..If so your OK, If not..and it reads 12 volts, you need a resistor.

The coil will show 12 volts if the points are open when you measure them because there is no opposition to the flow..(no load on the circuit, points not closed) This is why you need to jumper them shut before you test.

Your description sounds exactly like an non resistor system, points lasting about 3500 miles..and pitting...also the next thing to go will be the coil from you want to get a resistor and install it ASAP.

If you replaced a coil awhile ago, you may have replaced the resistor with it...these sometimes mount on the side of the coil...and that's why the problem now.

Almost ALL points systems require a resistor with few exceptions such as performance aftermarket systems..
Reply With Quote Quick reply to this message

Recent Electrical posts with photos

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


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
Turbo vs Supercharger - Write up!! FastChevyTruck Engine 107 02-16-2011 12:18 PM
Wanna Talk Cars "Fords" 66Falcon Hotrodders' Lounge 17 10-01-2005 05:29 AM
Having problems with ford aod tras shift points. firewood Transmission - Rearend 10 10-07-2003 06:27 PM
'74 Ford Electical System mystical_magickal_one Electrical 0 04-24-2003 09:16 AM
Whatever happend to these guys? hot_rod_kid Hotrodders' Lounge 20 12-17-2002 09:20 AM

All times are GMT -6. The time now is 05:25 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.