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 > General Truck Forums > Engine & Drivetrain > LSx Swaps

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 01-10-2018, 02:05 PM   #1
sixty4bigwindow
Registered User
 
sixty4bigwindow's Avatar
 
Join Date: Feb 2016
Location: BACK in Southern Oregon... Don't ask
Posts: 149
LS Swap wiring diagram

Hey fellas, so I've found a few different LS swaps available that are complete with motor trans and harness. The one I'm leaning towards has the flashed ECU, DBC, and set up for the "2 wire" I believe it's called. M

My question is if it is a literal 2 wire setup. We had a wiring harness installed from Qwik Wire a couple years ago, so it is all updated wiring. I'm just kinda wondering what is going to connect to what with a setup like that.
__________________
Been a crazy 2018. Moved twice, back HOME in Oregon. Now to put everything back together, including the truck...

My build thread for "Rocket" - http://67-72chevytrucks.com/vboard/s...d.php?t=753023
sixty4bigwindow is offline   Reply With Quote
Old 01-10-2018, 04:33 PM   #2
tinydb84
Registered User
 
tinydb84's Avatar
 
Join Date: Jul 2009
Location: San Jose Ca
Posts: 2,578
Re: LS Swap wiring diagram

Its been a bit since I did my brother's wiring but it was three wires (four if you count the fuel pump).

1. Wire to the fuse block that was hot when key on.
2. Wire to the starter.
3. Ground.

I think that was it if I remember correctly.
__________________
David
Used parts build: http://67-72chevytrucks.com/vboard/s...d.php?t=638991
My brother's Nova: http://www.67-72chevytrucks.com/vboa...d.php?t=727985
Rear suspension rework: http://www.67-72chevytrucks.com/vboa...d.php?t=750557
Instagram: myfabguy
tinydb84 is offline   Reply With Quote
Old 01-10-2018, 05:35 PM   #3
sixty4bigwindow
Registered User
 
sixty4bigwindow's Avatar
 
Join Date: Feb 2016
Location: BACK in Southern Oregon... Don't ask
Posts: 149
Re: LS Swap wiring diagram

Quote:
Originally Posted by tinydb84 View Post
Its been a bit since I did my brother's wiring but it was three wires (four if you count the fuel pump).

1. Wire to the fuse block that was hot when key on.
2. Wire to the starter.
3. Ground.

I think that was it if I remember correctly.
Ok that's kinda what I assumed for the short harness. And then the rest of it is just the wires from the computer to the injectors and sensors etc. correct?
__________________
Been a crazy 2018. Moved twice, back HOME in Oregon. Now to put everything back together, including the truck...

My build thread for "Rocket" - http://67-72chevytrucks.com/vboard/s...d.php?t=753023
sixty4bigwindow is offline   Reply With Quote
Old 01-10-2018, 05:38 PM   #4
sixty4bigwindow
Registered User
 
sixty4bigwindow's Avatar
 
Join Date: Feb 2016
Location: BACK in Southern Oregon... Don't ask
Posts: 149
Re: LS Swap wiring diagram

There's a guy I follow on IG who lives in Salinas that sells complete swaps with the 3 wire harness for a reasonable price. 99k to 115k miles on them, see them running. He's in your area Tiny!
__________________
Been a crazy 2018. Moved twice, back HOME in Oregon. Now to put everything back together, including the truck...

My build thread for "Rocket" - http://67-72chevytrucks.com/vboard/s...d.php?t=753023
sixty4bigwindow is offline   Reply With Quote
Old 01-10-2018, 05:38 PM   #5
tinydb84
Registered User
 
tinydb84's Avatar
 
Join Date: Jul 2009
Location: San Jose Ca
Posts: 2,578
Re: LS Swap wiring diagram

Yes
__________________
David
Used parts build: http://67-72chevytrucks.com/vboard/s...d.php?t=638991
My brother's Nova: http://www.67-72chevytrucks.com/vboa...d.php?t=727985
Rear suspension rework: http://www.67-72chevytrucks.com/vboa...d.php?t=750557
Instagram: myfabguy
tinydb84 is offline   Reply With Quote
Old 01-10-2018, 05:43 PM   #6
tinydb84
Registered User
 
tinydb84's Avatar
 
Join Date: Jul 2009
Location: San Jose Ca
Posts: 2,578
Re: LS Swap wiring diagram

Quote:
Originally Posted by sixty4bigwindow View Post
There's a guy I follow on IG who lives in Salinas that sells complete swaps with the 3 wire harness for a reasonable price. 99k to 115k miles on them, see them running. He's in your area Tiny!
Ive talked to him before. Pacific fab in Gilroy who is on here too does the same. Whats your instagram name?
__________________
David
Used parts build: http://67-72chevytrucks.com/vboard/s...d.php?t=638991
My brother's Nova: http://www.67-72chevytrucks.com/vboa...d.php?t=727985
Rear suspension rework: http://www.67-72chevytrucks.com/vboa...d.php?t=750557
Instagram: myfabguy
tinydb84 is offline   Reply With Quote
Old 01-11-2018, 02:14 PM   #7
sixty4bigwindow
Registered User
 
sixty4bigwindow's Avatar
 
Join Date: Feb 2016
Location: BACK in Southern Oregon... Don't ask
Posts: 149
Re: LS Swap wiring diagram

Quote:
Originally Posted by tinydb84 View Post
Ive talked to him before. Pacific fab in Gilroy who is on here too does the same. Whats your instagram name?
big_red_the_2nd

Follow me and I'll follow back!! That's awesome, what is his IG name if he's on there??
__________________
Been a crazy 2018. Moved twice, back HOME in Oregon. Now to put everything back together, including the truck...

My build thread for "Rocket" - http://67-72chevytrucks.com/vboard/s...d.php?t=753023
sixty4bigwindow is offline   Reply With Quote
Old 01-22-2018, 11:16 PM   #8
doug_p
Registered User
 
Join Date: Sep 2014
Location: Yorktown, VA
Posts: 13
Re: LS Swap wiring diagram

check out LT1swap.com the guy has everything you need on his page, easy to follow, easy to do . . . covers everything - which wires to keep, which to eliminate, how to make the fuse panel needed - it is an excellent resource for swapping LS engines, even though it is called LT1 swap.
doug_p 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 08:43 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com