LS2 TB Conversion
Thread Starter
Drifting
Joined: Apr 2004
Posts: 1,889
Likes: 0
From: ottawa ontario
LS2 TB Conversion
Hey guys I need some help here..My buddy and I are putting a LS2 based motor in his 2003 Z06..He has the 90mm TB and we need to figure our what wires to spice the new harness into..Can anyone help out with this?
Supporting Tuner
Joined: Sep 2004
Posts: 51,896
Likes: 39
From: ================== Houston, Texas www.englandgreen.com ================== Necessary Evil™ __________
CI 6-7-8-9-10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14
Get the Caspers conversion harness - 108115. 
Melting Slicks
Joined: Mar 2003
Posts: 3,116
Likes: 10
From: Macomb MI
A.) ACT2
B.) ACT1
C.) +5v TPS Reference – Common to both TPS’s
D.) TP1 Signal 0-5v
E.) Common Ground
F.) TP2 Signal 5-0v
98-04 Wiring hookup
A.) ACT 2 - Brown
B.) ACT 1 - Yellow
C.) +5 TPS Dk Green/Wht
D.) TP1 Signal – Dark Blue
E.) TPS GND – Purple
F.) TP2 Signal – Pink
Thread Starter
Drifting
Joined: Apr 2004
Posts: 1,889
Likes: 0
From: ottawa ontario
PIN ID LS2 90mm
A.) ACT2
B.) ACT1
C.) +5v TPS Reference – Common to both TPS’s
D.) TP1 Signal 0-5v
E.) Common Ground
F.) TP2 Signal 5-0v
98-04 Wiring hookup
A.) ACT 2 - Brown
B.) ACT 1 - Yellow
C.) +5 TPS Dk Green/Wht
D.) TP1 Signal – Dark Blue
E.) TPS GND – Purple
F.) TP2 Signal – Pink
A.) ACT2
B.) ACT1
C.) +5v TPS Reference – Common to both TPS’s
D.) TP1 Signal 0-5v
E.) Common Ground
F.) TP2 Signal 5-0v
98-04 Wiring hookup
A.) ACT 2 - Brown
B.) ACT 1 - Yellow
C.) +5 TPS Dk Green/Wht
D.) TP1 Signal – Dark Blue
E.) TPS GND – Purple
F.) TP2 Signal – Pink
Instructor
Joined: Dec 2001
Posts: 165
Likes: 0
From: Finspong, Sweden
PIN ID LS2 90mm
A.) ACT2
B.) ACT1
C.) +5v TPS Reference – Common to both TPS’s
D.) TP1 Signal 0-5v
E.) Common Ground
F.) TP2 Signal 5-0v
98-04 Wiring hookup
A.) ACT 2 - Brown
B.) ACT 1 - Yellow
C.) +5 TPS Dk Green/Wht
D.) TP1 Signal – Dark Blue
E.) TPS GND – Purple
F.) TP2 Signal – Pink
A.) ACT2
B.) ACT1
C.) +5v TPS Reference – Common to both TPS’s
D.) TP1 Signal 0-5v
E.) Common Ground
F.) TP2 Signal 5-0v
98-04 Wiring hookup
A.) ACT 2 - Brown
B.) ACT 1 - Yellow
C.) +5 TPS Dk Green/Wht
D.) TP1 Signal – Dark Blue
E.) TPS GND – Purple
F.) TP2 Signal – Pink
Stupid question but am a bit confused...
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski