Drag Racing Tech
Sponsored by:
Sponsored by:

MSD 2 Step Wiring question.

Thread Tools
 
Search this Thread
 
Old Apr 30, 2011 | 09:49 PM
  #1  
GluMaker's Avatar
Thread Starter
Teching In
 
Joined: Apr 2011
Posts: 37
Likes: 1
Default MSD 2 Step Wiring question.

Im installing a 2 step on my 2002 Z28 M6 tomorrow. I looked up the wiring schematics for the clutch switch, I was under the impression I could use the Safety switch, activates low to the floor like i want. But thats a big fat NO! Since I want to keep the function of the switch but it has no voltage when the vehicle is running.?. I see that the cruise cancel switch will work but I was wondering if the switch is activated with very little pedal movement like the brake switch? Cutting the safety switch is not an option for me since it is a daily driver and someone else(State Inspector) may have to drive it at some point. I know a lot of you guys run this set up so any info would be great! Thanks in advance!
Reply
Old Apr 30, 2011 | 10:04 PM
  #2  
Nitroused383's Avatar
9 Second Club
iTrader: (10)
 
Joined: Aug 2008
Posts: 2,817
Likes: 6
From: Washington
Default

I just wired mine last weekend, very simple and you do not have to run any wire into the cab. Blue PCM # 32 Grey wire Clutch Pedal Position Switch Signal. Everything functions as normal and the 2 step is only active when the pedal is to the floor.


http://www.ls2.com/boggs/torques/00pinpcm.htm
Reply
Old Apr 30, 2011 | 10:08 PM
  #3  
SmokedOutZ28's Avatar
11 Second Club
iTrader: (35)
 
Joined: Dec 2004
Posts: 2,163
Likes: 0
From: NW Chicago burbs
Default

I wired mine off the switch its as easy to adjust as the brake light switch as far as sensitivity and I used the harness right at the pedal.
Reply
Old Apr 30, 2011 | 10:39 PM
  #4  
GluMaker's Avatar
Thread Starter
Teching In
 
Joined: Apr 2011
Posts: 37
Likes: 1
Default

Originally Posted by Nitroused383
I just wired mine last weekend, very simple and you do not have to run any wire into the cab. Blue PCM # 32 Grey wire Clutch Pedal Position Switch Signal. Everything functions as normal and the 2 step is only active when the pedal is to the floor.

WOW!! Thanks for the Quick response. I was actually wanting to hook it to the PCM harness to keep it all under the hood! I just couldn't find a diagram of the PCM connector. This is a big help. What RPM do you have your set at? I hooked it up Quick and hard wire to B+ to test it out. at 4500 it sounds NaStY! Stock mani's and cats with straight pipe. Someone is gonna **** when I box it next to them at a light! LOL
Reply
Old May 1, 2011 | 12:13 AM
  #5  
Nitroused383's Avatar
9 Second Club
iTrader: (10)
 
Joined: Aug 2008
Posts: 2,817
Likes: 6
From: Washington
Default

A 2 step will melt your cats so say good bye to them lol. I've played with mine a little bit and I'm going to try launching around 4000-5000 rpm on 5lbs of boost.

Last year when I was N/A I launched at 6000-6800 rpm and wasn't real consistant, I needed a 2 step real bad.

http://www.youtube.com/watch?v=x8S2jDZdRLQ
Reply
Old May 1, 2011 | 09:31 AM
  #6  
GluMaker's Avatar
Thread Starter
Teching In
 
Joined: Apr 2011
Posts: 37
Likes: 1
Default

Lol! Cats! They won't be on there long anyway. Yeah the raw fuels gonna eat em up. Thanks again. I'll post a vid when done
Reply
Old May 1, 2011 | 11:32 PM
  #7  
GluMaker's Avatar
Thread Starter
Teching In
 
Joined: Apr 2011
Posts: 37
Likes: 1
Default

Thanks again for the help. I got it installed. Tried it out a little, not to much though. That thing spells bad news for my tires!! Thanks again for the help.
Reply
Old May 2, 2011 | 01:39 AM
  #8  
Nitroused383's Avatar
9 Second Club
iTrader: (10)
 
Joined: Aug 2008
Posts: 2,817
Likes: 6
From: Washington
Default

Ya no problem! Time for some slicks, but don't try it with the 10 bolt
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old May 2, 2011 | 08:58 AM
  #9  
GluMaker's Avatar
Thread Starter
Teching In
 
Joined: Apr 2011
Posts: 37
Likes: 1
Default

You know in gonna! Lmao. If it breaks I'll have an excuse to build a 12 bolt. I have heard mixed reviews on 10 bolt reliabilty. Bit the fact is it's only a matter of time before it explodes. Thanks for the tip. What kind of turbo setup you running?
Reply
Old Aug 26, 2012 | 07:24 PM
  #10  
CamaroZ28_LS1's Avatar
11 Second Club
iTrader: (5)
 
Joined: Jan 2007
Posts: 394
Likes: 0
From: WA
Default

A question about the MSD 2 step. I know this is an old topic but instead of starting a new one, does anyone know what wire to tap into on the wiring harness going into the clutch pedal switch? I hooked it the red 12v wire and it activates it with or with out the clutch pedal depressed. I don't feel like wiring it to the pcm harness since I ran the reference wire (blue wire) through the dash already. A quick response would be awesome! Thanks!
Reply
Old Aug 26, 2012 | 09:16 PM
  #11  
SmokedOutZ28's Avatar
11 Second Club
iTrader: (35)
 
Joined: Dec 2004
Posts: 2,163
Likes: 0
From: NW Chicago burbs
Default

Originally Posted by CamaroZ28_LS1
A question about the MSD 2 step. I know this is an old topic but instead of starting a new one, does anyone know what wire to tap into on the wiring harness going into the clutch pedal switch? I hooked it the red 12v wire and it activates it with or with out the clutch pedal depressed. I don't feel like wiring it to the pcm harness since I ran the reference wire (blue wire) through the dash already. A quick response would be awesome! Thanks!
Here is a picture of two switch possibilities You either have one or the other on the clutch pedal (see attached) that is called the clutch anticipate switch from what I saw in the wiring diagram it lets the PCM know when the clutch is pressed for the Cruise control. I tapped off of the grey with the black tracer for the signal to the 2 step to let it know when to activate/de-activate.

You can add a switch inline if you wish so you can turn it off during normal driving I did but never use it, it's almost impossible to activate the 2-step during normal driving.
Attached Thumbnails MSD 2 Step Wiring question.-harness.jpg  
Reply
Old Aug 27, 2012 | 03:20 PM
  #12  
4U2NV-SS's Avatar
TECH Regular
iTrader: (21)
 
Joined: Mar 2008
Posts: 432
Likes: 0
From: Colorado
Default

I just hooked mine to the PCM #32 grey wire and it works perfect. Wish i would have done it this way the first time.
Reply
Old Aug 27, 2012 | 04:44 PM
  #13  
Nemesis350's Avatar
11 Second Club
iTrader: (11)
 
Joined: Aug 2009
Posts: 429
Likes: 1
From: Central TX
Default

Originally Posted by 4U2NV-SS
I just hooked mine to the PCM #32 grey wire and it works perfect.
Same here. It took me longer to find a spot i liked to put the 2 step than it did to hook it all up. My only worry is that it's activated the second i rest my foot on the clutch pedal. I wonder if i can adjust that any?
Reply
Old Aug 29, 2012 | 10:59 PM
  #14  
silverls1z28ofdeath's Avatar
On The Tree
 
Joined: Apr 2010
Posts: 173
Likes: 0
From: Omaha,NE
Default

Ok I'm doin a two step also and I can't get this f****r to activate make this dummy proof for me I spliced my wire into the gray 32 pin wire does it now plug into the blue or white blue stripe wire please help I'm getting frustrated really fast lol
Reply
Old Aug 29, 2012 | 11:35 PM
  #15  
itsslow98's Avatar
TECH Senior Member
iTrader: (18)
 
Joined: Apr 2006
Posts: 6,762
Likes: 5
From: Maryland
Default

Originally Posted by Nemesis350
Same here. It took me longer to find a spot i liked to put the 2 step than it did to hook it all up. My only worry is that it's activated the second i rest my foot on the clutch pedal. I wonder if i can adjust that any?
I have the same issue and it messed me up at the track last week. It would stay engaged as i slipped the clutch off the line and I have a habit of not COMPLETELY removing my foot from the clutch pedal. It killed me every pass because ti would stay enagegd until I hit second. Ill be checking in on this thread to see if there is a fix for that.
Reply
Old Aug 31, 2012 | 01:15 AM
  #16  
CamaroZ28_LS1's Avatar
11 Second Club
iTrader: (5)
 
Joined: Jan 2007
Posts: 394
Likes: 0
From: WA
Default

Originally Posted by silverls1z28ofdeath
Ok I'm doin a two step also and I can't get this f****r to activate make this dummy proof for me I spliced my wire into the gray 32 pin wire does it now plug into the blue or white blue stripe wire please help I'm getting frustrated really fast lol

the blue/white wire is the one you use. Works perfect for me now after feeling like a retard. I don't have any issues with mine at all now. Used the gray wire on the harness to the clutch pedal switch.
Reply
Old Jul 30, 2015 | 04:14 PM
  #17  
Turbo306Fox's Avatar
TECH Apprentice
iTrader: (3)
 
Joined: May 2011
Posts: 324
Likes: 3
Default

Bringing back this old post but I need help. I've tried splicing into the harness on the clutch pedal and that won't work I've tried splicing into they gray wire on pin 32 that won't work either what am I doing wrong? I want it activated with the clutch pedal not a switch help please!!!
Reply
Old Oct 11, 2015 | 03:35 PM
  #18  
99 LSFUN!'s Avatar
Teching In
 
Joined: Aug 2015
Posts: 12
Likes: 0
Default

Also grave digging here. 2step works like it should. Blue and white wire tapped into #32 grey wire. I'm having the same issue as a few others. Even if my foot rests on the clutch pedal it activates the 2step. Messed up my runs last night. What do I need to adjust, and how?
Reply
Old Jul 6, 2016 | 09:34 PM
  #19  
6spdg37s's Avatar
TECH Apprentice
iTrader: (1)
 
Joined: Jul 2012
Posts: 326
Likes: 0
Default

Originally Posted by 99 LSFUN!
Also grave digging here. 2step works like it should. Blue and white wire tapped into #32 grey wire. I'm having the same issue as a few others. Even if my foot rests on the clutch pedal it activates the 2step. Messed up my runs last night. What do I need to adjust, and how?
bump having same issues now. any help ? run it into the car off the one that it uses to start the car ?
Reply
Old Jul 7, 2016 | 01:18 AM
  #20  
Nitroused383's Avatar
9 Second Club
iTrader: (10)
 
Joined: Aug 2008
Posts: 2,817
Likes: 6
From: Washington
Default

Just adjust the switch at the pedal further away so it's not at the very top. It's a pain to crawl under there but it's threaded quite a ways so put it where you like.
Reply



All times are GMT -5. The time now is 05:04 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE