LT1-LT4 Modifications 1993-97 Gen II Small Block V8

95 LT1. What wire is the tach lead?

Thread Tools
 
Search this Thread
 
Old Apr 14, 2006 | 12:44 AM
  #1  
SweeTbone's Avatar
Thread Starter
11 Second Club
20 Year Member
iTrader: (8)
 
Joined: Feb 2005
Posts: 2,545
Likes: 7
From: Toledo, OH
Default 95 LT1. What wire is the tach lead?

My buddy has a 95 Formula. He caught a glimpse of my Raptor shift light and is about to purchase one. What wire does he tap into for a LT1? It was pin 10 out of my PCM. Do you tap into the PCM or somewhere else for a 95? Thanks for any help.
Reply
Old Apr 14, 2006 | 10:21 AM
  #2  
Captainofiron's Avatar
TECH Fanatic
iTrader: (1)
 
Joined: Apr 2006
Posts: 1,687
Likes: 0
From: New Mexico
Default

First off Nice KARR. I have wanted a KITT replica sinceI was little watching Micheal Knight and KITT zoom around on TV.

Well I checked my wiring diagrams and found this for ya. The tach lead of coarse is the white wire, you can tap in one of two places. First you could tap in at the PCM in the Engine compartment or behind the cluster. The first might be easier if you dont want to tear up your dash.
Reply
Old Apr 14, 2006 | 10:30 AM
  #3  
SweeTbone's Avatar
Thread Starter
11 Second Club
20 Year Member
iTrader: (8)
 
Joined: Feb 2005
Posts: 2,545
Likes: 7
From: Toledo, OH
Default

Which pin # is it? I'm assuming the PCM is similar to the LS1. Two different slots, RED and BLUE. Thanks.

Thanks for the compliments also. I grew up watching Knight Rider also, and I always said "One day, I'm gonna have a car like that."
Reply
Old Apr 14, 2006 | 10:42 AM
  #4  
Captainofiron's Avatar
TECH Fanatic
iTrader: (1)
 
Joined: Apr 2006
Posts: 1,687
Likes: 0
From: New Mexico
Default

Out of the PCM I believe its the 13th down (not 100% positive) it should be the only white wire coming out of the PCM on a 95 though

On the dash cluster I have no idea which one it is, the wiring diagram doesnt show
Reply
Old Apr 14, 2006 | 10:44 AM
  #5  
buffman's Avatar
TECH Addict
iTrader: (9)
 
Joined: Nov 2004
Posts: 2,289
Likes: 0
From: Kzoo, MI
Default

If it's the same on the B-cars then we use the A13 pin...
Reply
Old Apr 14, 2006 | 08:16 PM
  #6  
crAzy95Z28's Avatar
12 Second Club
iTrader: (3)
 
Joined: Dec 2003
Posts: 822
Likes: 0
From: Houston/Missouri City
Default

i used the white wire from the coil near the front of the engine. But that was for my digital window switch that reads the rpms.
Reply
Old Apr 14, 2006 | 10:26 PM
  #7  
1SLO6's Avatar
TECH Enthusiast
iTrader: (8)
 
Joined: Nov 2003
Posts: 695
Likes: 0
From: Covina
Default

u got a couple of places... What I find is that the best place to get your tach signal is from the tach filter. Use the white wire that runs between the filter and the instrument cluster, not the white wire that runs between the coil and the filter. this wire should also be found running to the instrument cluster, although I was unable to determine which pin at the instrument cluster.
Reply
Old Apr 15, 2006 | 12:20 AM
  #8  
buffman's Avatar
TECH Addict
iTrader: (9)
 
Joined: Nov 2004
Posts: 2,289
Likes: 0
From: Kzoo, MI
Default

the wire that comes from the PCM is said to be a lot cleaner in terms of electrical noise and all that mumbo jumbo compared to tapping off the coil wire.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

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

 Verdad Gallardo
story-4

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

 Pouria Savadkouei
story-5

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

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

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

 Verdad Gallardo




All times are GMT -5. The time now is 10:33 PM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
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-4
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-5
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-6
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-7
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-8
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-9
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