The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1969 - 1972 Blazers and Jimmys Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 01-19-2015, 04:06 PM   #1
az1970k5
Registered User
 
az1970k5's Avatar
 
Join Date: Feb 2014
Location: Tucson,Az
Posts: 128
purple ignition wire

I know this is a simple fix but I hit a mental block. The purple ignition wire on my truck is cut and jumped to another purple wire that goes out the firewall. Is this for the neutral safety switch? If so can anybody be so kind as to point me in the right direction to get this hooked up the correct way? I know my safety switch has one connector with a green wire and a light green wire. The blazer also starts in any gear
az1970k5 is offline   Reply With Quote
Old 01-19-2015, 06:56 PM   #2
ray_mcavoy
Registered User
 
Join Date: Nov 2009
Location: Sherman, ME
Posts: 2,366
Re: purple ignition wire

One purple wire runs from the "SOL" terminal on the ignition switch down to the neutral safety switch. And from there another purple wire runs out to the "S" terminal on the starter solenoid.

On automatic transmissions, the neutral safety and reverse light switches are a combination unit that shares the same housing. The green wires are for the reverse lights.

It sounds like you basically need to cut the purple wires back apart at the splice, crimp on a couple of terminals, and plug them into the neutral safety switch. The purple wires should connect to the two parallel blades ... the ones that look like this: II

The wires were probably jumpered together for a reason so you might also have to deal with a mis-adjusted or defective neutral safety switch.
ray_mcavoy is offline   Reply With Quote
Old 01-19-2015, 08:33 PM   #3
az1970k5
Registered User
 
az1970k5's Avatar
 
Join Date: Feb 2014
Location: Tucson,Az
Posts: 128
Re: purple ignition wire

Thanks for the quick response Does it matter which purple wire goes in which of the 2 terminals?
az1970k5 is offline   Reply With Quote
Old 01-19-2015, 08:36 PM   #4
ray_mcavoy
Registered User
 
Join Date: Nov 2009
Location: Sherman, ME
Posts: 2,366
Re: purple ignition wire

You're welcome!

No, it doesn't matter which purple wire goes to which of the 2 terminals. The safety switch simply makes a connection between those two terminals when the shifter is in park or neutral.
ray_mcavoy is offline   Reply With Quote
Old 01-20-2015, 09:36 AM   #5
JMac11
Registered User
 
JMac11's Avatar
 
Join Date: May 2005
Location: Tallahassee Fl
Posts: 773
Re: purple ignition wire

Ray is 100% correct, just swapped out a harness from a stick truck to an automatic. Had to splice in for the Nuetral safety switch
JMac11 is offline   Reply With Quote
Old 01-20-2015, 09:56 PM   #6
crashflow
Registered User
 
crashflow's Avatar
 
Join Date: Sep 2014
Location: Black Hills South Dakota
Posts: 19
Re: purple ignition wire

I think there is also a purple wire under the hood that goes to the blower motor. someone will have t back me up on that but make sure it is not that wire.
__________________
1972 blazer in progress. 1969/1988 conversion shortbox4x4. 1969 blazer in progress. 1951 5 window 1/2 pickup. 1969 big block gto.(wife's car).
crashflow is offline   Reply With Quote
Old 01-20-2015, 10:15 PM   #7
crashflow
Registered User
 
crashflow's Avatar
 
Join Date: Sep 2014
Location: Black Hills South Dakota
Posts: 19
Re: purple ignition wire

. double post
__________________
1972 blazer in progress. 1969/1988 conversion shortbox4x4. 1969 blazer in progress. 1951 5 window 1/2 pickup. 1969 big block gto.(wife's car).
crashflow is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
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

Forum Jump


All times are GMT -4. The time now is 11:05 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com