Register or Log In To remove these advertisements. |
|
|
|
Thread Tools | Display Modes |
04-05-2016, 03:03 PM | #1 |
Registered User
Join Date: Apr 2014
Location: asheville nc
Posts: 151
|
what is needed to incorporate ls harness into stock wiring?
I'm going to be doing a LS swap soon into my 85' C10 and I was wondering once I get my LS harness all made up, what am I needing to do with my stock wiring in my truck. Does the LS harness just replace what's needed and the rest of the stock wiring (headlights etc) just remain in the truck and work fine? thanks for any insight I just never see this talked about.
|
04-05-2016, 04:07 PM | #2 |
Registered User
Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
|
Re: what is needed to incorporate ls harness into stock wiring?
Your L S will be a stand alone harness, with a switched 12VDC and a constant 12VDC
__________________
53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42 |
04-05-2016, 06:35 PM | #3 |
Post Whore
Join Date: May 2015
Location: Alabama
Posts: 14,670
|
Re: what is needed to incorporate ls harness into stock wiring?
Ditto to what solid says..the ls stands alone just be sure to ground everything ( motor to frame, body to frame, motor to body, of course battery to motor..) you can't have to many grounds, but on your truck side harness you will still need power as well so dont forget to hook that back up to. I used the big red wire from the hei for my switch on power, the original starter wire from the key went right back on the ls starter and the hot side wire from the starter went back up to the 2 pole connector on firewall above distributor and that should keep all your truck electrical working and that's where I picked up my constant power.
|
04-05-2016, 10:27 PM | #4 |
Registered User
Join Date: Feb 2004
Location: brownfield texas (west texas)
Posts: 1,936
|
Re: what is needed to incorporate ls harness into stock wiring?
Yea your ls harness will have a battery hot, ign hot, ground, fuel pump,tac, tcc brake, and vss, if your lucky it may have e fans depending on who built it. The battery power should feed relays one for ls harness main, and one for fuel pump relay, you should have a minimum of 4 fuses to run your injectors and other . You can tie it in but it's best to Lear it stand alone less mess to chaise later.
__________________
The Ghost 67 short wide full custom. 550 hp LSX, 4l80E, narrowed 9". Body dropped w/air ride! ........................ ___ .........________//__{\_____ ,,,,,,,/__(⊙)___//___/__(O)_/ @disciple2.rc 💪instagram💪 LED TAILS |
04-05-2016, 10:39 PM | #5 | |
Registered User
Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
|
Re: what is needed to incorporate ls harness into stock wiring?
Quote:
Temp gauge to pass side head Oil sender to by pass in LS Starter to ing. switch, same location Alt lead went to the Alt It really is that a plug and play system !
__________________
53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42 |
|
04-06-2016, 10:49 AM | #6 |
Registered User
Join Date: Apr 2014
Location: asheville nc
Posts: 151
|
Re: what is needed to incorporate ls harness into stock wiring?
thanks so much everybody- this is exactly what I needed to know
|
04-09-2016, 06:49 PM | #7 |
Registered User
Join Date: May 2014
Location: Mission BC
Posts: 452
|
Re: what is needed to incorporate ls harness into stock wiring?
Here's a pic of my '62 under the hood. I kept the stock harness and just added what was needed for the LS to run. 4 fuses and 2 relays, diagnostic port, and the PCM of course.
__________________
1962 C10 Longbox LS 5.3 4L60E----Sold$$ 2014 Ram 4x4 3500 Laramie Diesel..Momma's truck 2015 Ram 4x4 1500 1997 Boxster. 1972 K10 Custom Deluxe LS 6.0 1950 GMC 3100 S10 & LS swapped |
04-10-2016, 08:00 PM | #8 |
Registered User
Join Date: Jun 2014
Location: Bay Area, CA
Posts: 5
|
Re: what is needed to incorporate ls harness into stock wiring?
Thanks for starting this. I'm curious myself. I'm to the point on my build where I'm asking the same questions. Just had my stand alone built by Modern Vintage in Indiana. I'll be following this for sure
|
04-12-2016, 07:18 AM | #9 |
Registered User
Join Date: Apr 2014
Location: asheville nc
Posts: 151
|
Re: what is needed to incorporate ls harness into stock wiring?
How are gauges like oil pressure and coolant temp tied in? Do you have to go aftermarket for gauges to read what the LS sensors are reading?
|
04-12-2016, 10:09 AM | #10 |
Registered User
Join Date: May 2014
Location: Mission BC
Posts: 452
|
Re: what is needed to incorporate ls harness into stock wiring?
I went with aftermarket because my 62 only had idiot lights. I just changed my fuel tank last week and have not hooked up the fuel gauge but I know it's a 90 ohm and the gauge is 30 ohm. I will probably use a potentiometer to correct.
__________________
1962 C10 Longbox LS 5.3 4L60E----Sold$$ 2014 Ram 4x4 3500 Laramie Diesel..Momma's truck 2015 Ram 4x4 1500 1997 Boxster. 1972 K10 Custom Deluxe LS 6.0 1950 GMC 3100 S10 & LS swapped |
04-12-2016, 05:34 PM | #11 |
Post Whore
Join Date: May 2015
Location: Alabama
Posts: 14,670
|
Re: what is needed to incorporate ls harness into stock wiring?
Mine had idiot lights to. I went with mechanical gauges also. The ls harness reads of the sensor on driver side head. I drilled and tapped the passenger side head for my temp gauge,, on the oil sender I used the autometer adapter to go from metric to standard npt and hooked my gauge to it.
|
04-12-2016, 07:18 PM | #12 |
Registered User
Join Date: Mar 2016
Location: Yakima Washington
Posts: 122
|
Re: what is needed to incorporate ls harness into stock wiring?
although I have yet to accomplish my wiring for my LS in the 60 I will be using this guys site and his help for programming my ECM. He has a bunch of info that could be very useful.
http://lt1swap.com/2000harness.htm
__________________
1960 SWB “Pops” If you won't support our troops then stand in front of them! |
04-12-2016, 07:39 PM | #13 |
meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
|
Re: what is needed to incorporate ls harness into stock wiring?
^ Lt1swap is like a default resource for swap wiring. 70% of wiring questions can be solved with like 15minutes on the diagram sections over there.
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
|
Bookmarks |
|
|