ignition/coil wiring 72 chevy p/u - 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
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 12-19-2002, 02:40 PM
New Member
Join Date: Dec 2002
Location: Pittsburg, KS
Posts: 11
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post ignition/coil wiring 72 chevy p/u

1972 chevy pickup, half ton. v8

so pretty much when I got my truck the wiring was partially removed, no coil etc.

Anyways i have all the neccessary *parts* but hooking them together is my problem. I should mention it does turn over.

So I have a purple wire from my starter going inside, I assume thats to the ignition switch.

A green coming off the other side of the starter, connected somewhat ghetto to a yellow wire, and it was left lying around on top so I assume it goes to the coil... weather positive or negative, I don't know, I haven't plugged my dc cord in to test.

Theres the distributer wire... which runs from the coil to the distributer... through a resistor... weather this is the positive or negative wire.. I don't know..

And lastly... shouldn't my coil get a +12 somewhere? where does that wire come from?

(to simplify I need an simple ignition system diagram... and haynes doesn't have a 72 chevy diagram)

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 12-19-2002, 07:21 PM
New Member
Join Date: Dec 2002
Location: Brighton
Posts: 15
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
You are correct on the purple wire, it goes to the igniton switch and goes to the crank side of the ignition (post on the igniton, which has 12 volts when the igniton is in the crank positon), cranks the engine over.

The green wire that comes off the starter, goes to the positve side of the coil. This gives the coil power while cranking.

You will also need a power wire off of the igniton switch that supplies power when the ignition switch is in the run position. This is the 12 supply while the truck is running.

So once you let go of the crank positon, power switches from the starter to the igniton switch and the truck stays running.

The other wire between the coil and distributor should go to the Negative side of the coil. The other end comes from the points or magnetic pick-up in the distributor.

I hope this helps, if it isn't clear let me know, I will draw you a diagram.

Last edited by Jon; 04-17-2005 at 02:38 PM. Reason: advertising
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 12-21-2002, 05:59 AM
Join Date: Nov 2002
Posts: 65
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts

i have a 72 chevy and sparkys right on the wires.when i got my car it had extra wires sticking out and i didnt know what to do with them either. but i know i had and still do have a yellow wire that went to the starter. i cut it off because i cant figure where it goes and it doesnt effect my ignition at all. unlesss it went to the traditional points distributer which im guessing you have.
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

All times are GMT -6. The time now is 02:34 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 Hotrodders.com 1999 - 2012. All Rights Reserved.