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 11-03-2018, 02:29 PM   #1
tbrown5079
Registered User
 
Join Date: Feb 2007
Location: Blairsville, PA
Posts: 301
Nuetral safety switch for 4L60E

I installed a 4.8 from a 2007 GMC Sierra with a 4L60E transmission with a Lokar column shifter and it is super. I have been running it without a neutral safety switch, and now realize the Lokar BL 1400 U neutral safety/backup light switch will not work without modification. Has anyone adapted one of these to work, or do something else? Thanks, Tbrown
__________________
tbrown's 56 Cameo Build
tbrown5079 is offline   Reply With Quote
Old 11-03-2018, 04:29 PM   #2
Clyde65
1965 Chevy C10, 2005 4.8L/4l60
 
Clyde65's Avatar
 
Join Date: Aug 2004
Location: DFW Texas
Posts: 8,539
Re: Nuetral safety switch for 4L60E

I use a stock nuetral safety.
__________________
Clyde65

Rebuild of Clyde
http://67-72chevytrucks.com/vboard/s...84#post8338184

69 Aristocrat Lo Liner build
http://67-72chevytrucks.com/vboard/s...84#post7561684



support our troops!
Clyde65 is offline   Reply With Quote
Old 11-03-2018, 04:39 PM   #3
tbrown5079
Registered User
 
Join Date: Feb 2007
Location: Blairsville, PA
Posts: 301
Re: Nuetral safety switch for 4L60E

I get that, and I just looked, and the stock one is on there so I just have to figure out how to wire it in. Thanks.
__________________
tbrown's 56 Cameo Build
tbrown5079 is offline   Reply With Quote
Old 11-03-2018, 07:40 PM   #4
Clyde65
1965 Chevy C10, 2005 4.8L/4l60
 
Clyde65's Avatar
 
Join Date: Aug 2004
Location: DFW Texas
Posts: 8,539
Re: Nuetral safety switch for 4L60E

1966 c10 neutral safety switch wiring

This is better.

http://67-72chevytrucks.com/vboard/s...d.php?t=283712
Attached Images
 
__________________
Clyde65

Rebuild of Clyde
http://67-72chevytrucks.com/vboard/s...84#post8338184

69 Aristocrat Lo Liner build
http://67-72chevytrucks.com/vboard/s...84#post7561684



support our troops!

Last edited by Clyde65; 11-03-2018 at 07:46 PM.
Clyde65 is offline   Reply With Quote
Old 11-03-2018, 10:24 PM   #5
tbrown5079
Registered User
 
Join Date: Feb 2007
Location: Blairsville, PA
Posts: 301
Re: Nuetral safety switch for 4L60E

This is the the harness on the 4L60E transmission that you would think the power goes thru for the park/neutral start and the backup lights. Can I run power in and out for the starter and backup lights? Does anyone know the exact wires to use?
Attached Images
 
__________________
tbrown's 56 Cameo Build
tbrown5079 is offline   Reply With Quote
Old 11-04-2018, 11:42 AM   #6
ls1nova71
Registered User
 
ls1nova71's Avatar
 
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,117
Re: Nuetral safety switch for 4L60E

Quote:
Originally Posted by tbrown5079 View Post
This is the the harness on the 4L60E transmission that you would think the power goes thru for the park/neutral start and the backup lights. Can I run power in and out for the starter and backup lights? Does anyone know the exact wires to use?
That isn't the plug a 2007 should have, that's the older one that used two plugs. Yours should only have one bigger plug on it. That said, you can wire the back up lights straight to the switch, but to use the neutral safety function part of it you will need to wire in a starter relay. I can tell you how to wire it, but first you need to look and see exactly which switch you have.
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html

5.3 swap into my RUSTY '71 C10
http://ls1tech.com/forums/conversion...71-c-10-a.html
ls1nova71 is offline   Reply With Quote
Old 11-06-2018, 08:00 PM   #7
tbrown5079
Registered User
 
Join Date: Feb 2007
Location: Blairsville, PA
Posts: 301
Re: Nuetral safety switch for 4L60E

OK, nova 71, Thanks for the info. I see what you mean on the bigger plug. I downloaded the pinout and made a picture. Haven't got back to working on it, but would appreciate knowing how you wired yours. Don't want to make a stupid mistake now! Thanks, Tbrown
__________________
tbrown's 56 Cameo Build
tbrown5079 is offline   Reply With Quote
Old 11-07-2018, 12:31 AM   #8
ls1nova71
Registered User
 
ls1nova71's Avatar
 
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,117
Re: Nuetral safety switch for 4L60E

Back up lights are simple, ignition power to the pink wire on pin 11 (on the NSS connector) then the gray wire on pin 10 goes directly to the lights.

The neutral safety part is a little more involved since you need to add a starter relay to keep from burning up the switch straight away. The purple wire that comes from your ignition switch that you currently have going to the starter solenoid needs to be hooked to the pink wire on pin 12 (on NSS plug). Then the dark green wire on pin 1 will go to terminal 85 on the relay. Terminal 86 will go to ground. Terminal 30 will be constant power from the battery and then 87 will go to the starter solenoid.
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html

5.3 swap into my RUSTY '71 C10
http://ls1tech.com/forums/conversion...71-c-10-a.html
ls1nova71 is offline   Reply With Quote
Old 11-07-2018, 08:46 AM   #9
tbrown5079
Registered User
 
Join Date: Feb 2007
Location: Blairsville, PA
Posts: 301
Re: Nuetral safety switch for 4L60E

Thanks nova71. Will be out of town for a week so I will have it all planned out when I get back. Tbrown
__________________
tbrown's 56 Cameo Build
tbrown5079 is offline   Reply With Quote
Old 11-12-2018, 10:20 AM   #10
DaHos
Senior Member
 
DaHos's Avatar
 
Join Date: Sep 2011
Location: Owosso, Michigan
Posts: 2,852
Re: Nuetral safety switch for 4L60E

Quote:
Originally Posted by tbrown5079 View Post
Thanks nova71. Will be out of town for a week so I will have it all planned out when I get back. Tbrown

Any follow up on this?
__________________
1967 C10 SWB
Owner - Rustbelt Restorations
DaHos is offline   Reply With Quote
Old 11-13-2018, 09:37 PM   #11
65blackfleetside
Registered User
 
65blackfleetside's Avatar
 
Join Date: Nov 2015
Location: Central Florida
Posts: 215
Re: Nuetral safety switch for 4L60E

I used the stock GM switch that was on my 4L60E for both reverse lights and neutral safety switch. you can picked them up new relatively cheap too. try rock auto. i purchased a plug for this switch with pig tail i think from rock auto? Install it over the shaft with 2 bolts and pin it out . There are 2 different style plugs and wire diagrams so make sure you get the correct one for your switch. There are about 10 wires on the switch most of those illuminate the P-R-N-D-4-3-2-1 indicators. you wont use those. You will just use the ground. and the hot wire when in " P" and the hot wire when in "R" - Very simple.

If I remember correctly- the after market type switches only allow 1 or the other function not both like the OEM. Good luck
__________________
current ride 1951 AD Chevy 5 window 2004 LS Gen 3 [/B]
1965 fleetside Sold
65blackfleetside is offline   Reply With Quote
Old 11-21-2018, 06:43 PM   #12
tbrown5079
Registered User
 
Join Date: Feb 2007
Location: Blairsville, PA
Posts: 301
Re: Nuetral safety switch for 4L60E

Started sorting out my wiring and mounting the relay for the neutral safety switch. all is going well so far and found all the wires I need and won't have to drill any more holes in the firewall. Going to wire up the back up lights first to make sure I am on the right track. I don't mind wiring, but really take my time so I don't have any issues. Thanks for the advice Nova 71, hopefully I can cross this project off my list in a couple of days. Tbrown
__________________
tbrown's 56 Cameo Build
tbrown5079 is offline   Reply With Quote
Old 11-23-2018, 09:11 PM   #13
tbrown5079
Registered User
 
Join Date: Feb 2007
Location: Blairsville, PA
Posts: 301
Re: Nuetral safety switch for 4L60E

Finished wiring it up today and everything works fine. Just have to tidy up the wires and get everything in loom. Thanks again Nova 71. This site is awesome! Tbrown
__________________
tbrown's 56 Cameo Build
tbrown5079 is offline   Reply With Quote
Old 11-23-2018, 11:08 PM   #14
tbrown5079
Registered User
 
Join Date: Feb 2007
Location: Blairsville, PA
Posts: 301
Re: Nuetral safety switch for 4L60E

So does anyone know how many wires in the harness on the neutral safety switch are actually used besides the pins 1,10,11, and 12?
__________________
tbrown's 56 Cameo Build
tbrown5079 is offline   Reply With Quote
Old 11-24-2018, 12:59 AM   #15
ls1nova71
Registered User
 
ls1nova71's Avatar
 
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,117
Re: Nuetral safety switch for 4L60E

Quote:
Originally Posted by tbrown5079 View Post
So does anyone know how many wires in the harness on the neutral safety switch are actually used besides the pins 1,10,11, and 12?
Pins 4,5,6,7 and 8 are also used. Pin 7 is a ground and the other four wires go to the PCM. So nine wires total will be used. There are a couple extra wires that are for the shift interlock, but unless you have a factory column, that will be hard to hook up.
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html

5.3 swap into my RUSTY '71 C10
http://ls1tech.com/forums/conversion...71-c-10-a.html
ls1nova71 is offline   Reply With Quote
Old 12-23-2018, 02:43 PM   #16
solidaxel
Registered User
 
solidaxel's Avatar
 
Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
Re: Nuetral safety switch for 4L60E

So the two wires I need in the NSS are pin 12 pink (12VDC) and pin 1 dark green (ground)
and the relay.
I take it this is the park position only and not the neutral position, so the engine will not start in neutral, correct?
__________________
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
solidaxel is offline   Reply With Quote
Old 12-23-2018, 07:44 PM   #17
ls1nova71
Registered User
 
ls1nova71's Avatar
 
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,117
Re: Nuetral safety switch for 4L60E

No, it will start in park and neutral. If you used the shift interlock wire, pin 9, it would only start in park, but I don't know why you would want to do that.
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html

5.3 swap into my RUSTY '71 C10
http://ls1tech.com/forums/conversion...71-c-10-a.html
ls1nova71 is offline   Reply With Quote
Old 12-23-2018, 10:21 PM   #18
solidaxel
Registered User
 
solidaxel's Avatar
 
Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
Re: Nuetral safety switch for 4L60E

No I want it to start in P and N, just making sure I was following directions!

Thanks for the help Nova
__________________
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
solidaxel is offline   Reply With Quote
Old 12-26-2018, 10:28 PM   #19
dec010974
Registered User
 
dec010974's Avatar
 
Join Date: Oct 2012
Location: Miami, Florida
Posts: 905
Re: Nuetral safety switch for 4L60E

hello to all. im trying to understand this thread. i was able to hook my reverse lights up to the plug that tbrown5079 has listed and it works properly. i want to use this to hook up the park neutral switch feature but what is Pin #12?
dec010974 is offline   Reply With Quote
Old 12-27-2018, 01:00 AM   #20
ls1nova71
Registered User
 
ls1nova71's Avatar
 
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,117
Re: Nuetral safety switch for 4L60E

Quote:
Originally Posted by dec010974 View Post
hello to all. im trying to understand this thread. i was able to hook my reverse lights up to the plug that tbrown5079 has listed and it works properly. i want to use this to hook up the park neutral switch feature but what is Pin #12?
The pic he posted is the older switch, the numbered pins I have referred to are on the newer style one. If you have the old switch, it wires up the same, but the numbers are replaced with letters on the plugs and the wire colors are different. It would wire up as follows...

The purple wire that comes from your ignition switch that you currently have going to the starter solenoid needs to be hooked to the purple/white wire on pin E (on NSS plug). Then the yellow wire on pin G will go to terminal 85 on the relay. Terminal 86 will go to ground. Terminal 30 will be constant power from the battery and then 87 will go to the starter solenoid.
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html

5.3 swap into my RUSTY '71 C10
http://ls1tech.com/forums/conversion...71-c-10-a.html
ls1nova71 is offline   Reply With Quote
Old 01-01-2019, 08:27 AM   #21
dec010974
Registered User
 
dec010974's Avatar
 
Join Date: Oct 2012
Location: Miami, Florida
Posts: 905
Re: Nuetral safety switch for 4L60E

Thanks @ls1nova71. i was confused with the number #12.

Last edited by dec010974; 01-01-2019 at 08:38 AM.
dec010974 is offline   Reply With Quote
Old 12-06-2020, 11:10 AM   #22
Justin71105
Registered User
 
Join Date: Dec 2019
Location: Greer Sc
Posts: 214
Re: Nuetral safety switch for 4L60E

I know this is an old post and I have looked all last night and this morning for a NSS wiring diagram for my 4l60e that has the two plugs. This is the best one I found and hope I got it right.

The picture shows how I am taking the wiring to go from looking though a ton of forum posts. If I am wrong please correct me, do not have a column for my truck and was going to buy a new one with the NSS but found the 4l60e had it on the shift arm. Prefer this since the column I want does not provide a nss on them.
Attached Images
 
__________________
1964 C10 - Big window - resto-mod

Last edited by Justin71105; 12-06-2020 at 11:21 AM.
Justin71105 is offline   Reply With Quote
Old 12-06-2020, 07:40 PM   #23
kglowacky
Registered User
 
Join Date: Mar 2020
Location: The Woodlands,Tx
Posts: 555
Re: Nuetral safety switch for 4L60E

I did the same thing you are about to do. I did not have a steering column neutral switch so Went with the one on the trans shaft. I had to change my shaft as my 460 came out of a Camaro and it had a shifter switch. Anyhow I am looking for my wiring dia. when I find it i Will post it. I had to buy the pigtail also along with the switch. Search one of my prior threads (8-8-20) I think I show how I wired it.

Make sure you use a relay to put power to your park and neutral switch. If you don't the amps will smoke your switch.

Last edited by kglowacky; 12-06-2020 at 07:50 PM.
kglowacky is offline   Reply With Quote
Old 12-06-2020, 10:45 PM   #24
ls1nova71
Registered User
 
ls1nova71's Avatar
 
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,117
Re: Nuetral safety switch for 4L60E

Quote:
Originally Posted by Justin71105 View Post
I know this is an old post and I have looked all last night and this morning for a NSS wiring diagram for my 4l60e that has the two plugs. This is the best one I found and hope I got it right.

The picture shows how I am taking the wiring to go from looking though a ton of forum posts. If I am wrong please correct me, do not have a column for my truck and was going to buy a new one with the NSS but found the 4l60e had it on the shift arm. Prefer this since the column I want does not provide a nss on them.
What's written in the yellow box on the left is correct, but it's missing the ignition voltage on pin C to power the back up lights. The black/white wire in pin D will be grounded in the harness already, no need to do anything with that one. The other plug are the wires that go to the PCM, you shouldn't have to do anything to them either, just leave them alone.
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html

5.3 swap into my RUSTY '71 C10
http://ls1tech.com/forums/conversion...71-c-10-a.html
ls1nova71 is offline   Reply With Quote
Old 12-06-2020, 11:24 PM   #25
Justin71105
Registered User
 
Join Date: Dec 2019
Location: Greer Sc
Posts: 214
Re: Nuetral safety switch for 4L60E

Quote:
Originally Posted by ls1nova71 View Post
What's written in the yellow box on the left is correct, but it's missing the ignition voltage on pin C to power the back up lights. The black/white wire in pin D will be grounded in the harness already, no need to do anything with that one. The other plug are the wires that go to the PCM, you shouldn't have to do anything to them either, just leave them alone.
For pin D my psi harness does not come with anything that goes to this switch, i will be pulling the pigtail off the stock harness for it and using those wires to go out to everything I need them to.
__________________
1964 C10 - Big window - resto-mod
Justin71105 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 05:19 AM.


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