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Speedway GM Engine Wiring Harness, 1999-02 LS1

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Speedway GM Engine Wiring Harness, 1999-02 LS1

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Details

Reviews

Q & A

What's in the Box

Take the fear out of electronic fuel injection! These engine wiring harnesses are designed to make your engine transplant effortless. Each new harness contains in-depth application-specific instruction sheets, clearly marked factory GM connectors, labeled GXL jacketed wire, GM color coding, and pre-fitted corrugated slit loom for an extra value and professional look. All un-needed emissions wiring is eliminated to make the install as simple and reliable as possible. Standard length harnesses are 54" from the back of the engine to the PCM connectors.

1999-2002 LS1

  • Made from premium grade GXL jacketed automotive wire
  • Most wiring is larger gauge than stock application for durability
  • No splices to reduce points of failure
  • All primary grounding is done at the head or block and grounding points are isolated from each other to reduce electrical interference and minimize ground looping
  • Harness wiring matches GM wiring configuration and jacket colors follow GM color coding for easy identification
  • All electrical connectors are made by Delphi or Packard and are direct fit for GM cars and trucks
  • Can be installed to run engine in 20 minutes, but figure 4-6 hours for a professional installation
  • Diagnostic connector or OBD2 port for connection to scanners and tuning tools
  • Made in the USA.

Notes

Uses ECM # 09354896 or 12200411 Red and Blue type.

12 position fuse block for circuit isolation and superior protection:

  • B+
  • ECM
  • Fuel Relay
  • Fan1
  • Fan2
  • Ignition on switched power
  • ECM Trans, MAF
  • Coil L
  • Coil R
  • O2 heater
  • Injector Power L
  • Injector Power R
  • Fan relay

OBD 2 Diagnostic Port - Diagnostic connector or OBD2 port for connection to scanners and tuning tools.

Fuel Pump Relay is Included  - If you're on the road, the last thing you want to do is go looking for a special-order replacement relay. These relays are basic and common to the automotive industry and can be purchased from almost all auto parts stores. No specific part number needed - just take it in and match it up. It's is that simple.

Fan Relays are included  - Same as the fuel pump relay, these are premium quality relays with a peak current load rating of 30 amps so it can handle most fans, however if the fan requires more current to operate then they can be replaced by a 40 amp relay from any auto parts seller.

Fan Wiring - Fan wiring is installed in this harness and runs through from the relay location to the engine location. The wiring consists of 2 wires, 1 is a B+ for FAN#1 and 1 is a B+ for FAN#2. The grounding for the fans will need to be done at the fan location.

Gauge Wiring - There is a breakout near the fuse block that has the following wire for gauges, etc.:

  • Service Engine Light negative trigger for use with a light bulb
  • Park Neutral indicator wiring for the ecm to adjust RPM in drive gears, not for safety switch
  • Brake Switch for activation of torque converter lock up (to be active when brakes are applied)
  • Tachometer for use of engine RPM meter
  • Electronic Speedo output for running a electronic speedometer (see speedo manufacturer specs)
  • Harnesses without fans will have fan 1 and 2 relay trigger wiring
  • ALL OTHER gauge wiring is part of the chassis wiring and is NOT included in this wiring harness

Alternator Wiring - The field wiring is part of this harness and plugs into the alternator, the main big wire from the back of the alternator at the post is NOT in this harness.

Coil Pack Wiring - This harness has wiring up to the 7 pin connector at the coil pack mini harness located at each valve cover. This harness is not set up for remote coil locations however an extension harness can be purchased separately to move coils from the top of the engine.

Oil Pressure - Because the stock oil pressure sensor is not correct for aftermarket gauges it is NOT part of this harness, on electronic throttle engines the ECM looks at oil pressure so there is a sensor connection on those engines only (NOT a gauge connection).

Oxygen Sensors - This harness is set up to use the 99 Camaro LS1 BOSCH #13444

Transmission - This harness is made with 4L60E and manual 6 speed connections included, also has speed sensor wiring. ECM programming will need to match transmission style.

Premium Grade Wire and Manufacturing - All new GXL thicker jacketed automotive wire. Most wiring is larger gauge than stock application for durability. NO splices to reduce points of failure. All primary grounding is done at the head or block and grounding points are isolated from each other to reduce electrical interference and minimize ground looping. Harness wiring matches GM wiring configurations from verified schematics and jacket colors are easily identifiable and follow GM color coding. All electrical connectors are made by DELPHI or Packard and are direct fit for GM and are the same as used on GM cars and trucks.

Easy Installation - This harness is clearly labeled and is able to be installed to run the engine in about 20 minutes, but for that professional install figure on about 4-6 hours. These harnesses feature all of the connection points necessary to run the engine and transmission if applicable. The emission equipment has been eliminated and only the needed connections to run the engine and transmission are incorporated. ECM programming will need to be done to remove all of the unneeded trouble codes that may be active from the stock application. Programming will need to be done to remove VATS (vehicle anti theft system) programming otherwise the engine will not run. These wiring products do not include any type of VATS module to defeat the theft system.

Warranties

Warranty - Lifetime for the original owner against defects in workmanship within the wiring harness only, not time, or any damage in result of defective workmanship of the wiring.

Customer Reviews

Rated 5 out of 5 by 1 reviewers.
RATING BREAKDOWN
1 reviews
5 Stars
1
4 Stars
0
3 Stars
0
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

dave lorca customs
Verified Purchaser
sacramento,ca

98-02 ls1 harness

February 04, 2011
when i ordered this part i was very sceptical because of the price but when the actual harness arrived at my door and i opened the box, i was very happy to see a complete custom harness. usually when you order a part you cant see first you kind of wonder how it will look but this harness looks great and all of the plugs are high quality. i have already told several people about this harness and plan on ordering another one for a project i am building for my brother in law.
Pros:
  • Quality Construction
  • Easy To Use
  • Safe
Yes, I recommend this product.
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Page 1 of 1

Product Q&A

10 questions : 10 answers

1 answers

What Part Number Coil Pack For This Harness 06-LS2 Not Sure About The Remote Coil Deal

OneFastZ28
New Orleans La. USA
September 17, 2014

What Part Number Coil Pack For This Harness 06-LS2 Not Sure About The Remote Coil Deal

Answers

September 19, 2014
EricM
This wire harness is for the 99-02 LS1 series and has wiring up to the 7 pin connector at the coil pack and not designed for remote coil mounting.
1 answers

have a 2001 6.0 vortec from a silverado 2500hd will this work and what else will i need to transplant to a 59 pickup

59apache
Larose, LA, USA
July 18, 2014

have a 2001 6.0 vortec from a silverado 2500hd will this work and what else will i need to transplant to a 59 pickup

Answers

July 18, 2014
EricM
Yes this wire harness number 91099021 would be correct for your 6.0 engine.
1 answers

harness are the wires long enough for the computer to go inside the car?

Edward
Riverside, CA, USA
December 28, 2012

harness are the wires long enough for the computer to go inside the car?

Answers

December 28, 2012
Jason
Yes, the wires are long enough to put the ECM inside the dash panel or kick panel of your car. We also offer a longer version under part number 91099024 that is extended 4 foot for under seat style installations.
1 answers

harness does this harness eliminates all smog sensors and does it control the 4L60 trans? Im installing it on an old Impala and I don't want to have to buy any extra wires, I do have all the original wires from the 1999 WS6

Edward
Riverside, CA, USA
December 26, 2012

harness does this harness eliminates all smog sensors and does it control the 4L60 trans? Im installing it on an old Impala and I don't want to have to buy any extra wires, I do have all the original wires from the 1999 WS6

Answers

December 27, 2012
Jason
This harness eliminate all the emission control components and works with the 4L60E transmission. Uses ECM # 09354896 or 12200411 Red and Blue type. Verify your ECM unit for hassle free installation.
1 answers

does this harness control the lock-up on 700r4

phoenix az
March 04, 2012

does this harness control the lock-up on 700r4

Answers

March 07, 2012
John
This harness is made with 700R4 wiring also has speed sensor wiring. Linked with brake light switch for kick out of lock up when brakes applied
1 answers

What is the overall length of the regular and the plus 4 foot models?Is it the same overall length of the stock GTO harness?

February 09, 2012

What is the overall length of the regular and the plus 4 foot models?Is it the same overall length of the stock GTO harness?

Answers

February 10, 2012
John
Part number 91008589 Standard length is similar to original harness length and are 54” from the back of the engine to the PCM connectors. The 4 foot longer is designed for customers wanting to mount the components further back such as under the seat.
1 answers

Does this harness come with the 700R4 wiring to control the TCC lock up?

Ray
Minneapolis, MN
August 20, 2011

Does this harness come with the 700R4 wiring to control the TCC lock up?

Answers

August 22, 2011
John
The Speedway kits and the Painless kits do not come with the wiring, vacuum module, or senders for the various automatic transmissions such as the 700R. Speedway and Painless wiring harnesses are generic for hot rod applications or transplants into different vehicles. We do offer the lock up kit from Painless under number 91064038 if this would be of help.
1 answers

Is there any way to get a list of exactly what circuits are on the 99-02 LS1 harness?

Mark
Orlando FL
July 18, 2011

Is there any way to get a list of exactly what circuits are on the 99-02 LS1 harness?

Answers

July 19, 2011
Zach
The fuse panel on the 99-02 LS1 wiring harness, part number 91099021 has the following circuits: B+ ECM Fuel Relay Fan 1 Fan 2 Ignition on switched B+ ECM Trans, MAF Coil L Coil R O2 heater Injector power L Injector power R Fan relay
1 answers

Will this harness work with a vortec 5.3 in a 83 Buick regal

June 05, 2011

Will this harness work with a vortec 5.3 in a 83 Buick regal

Answers

June 08, 2011
John
Speedway offers stand alone wire harness to simplify transplanting an electronically controlled engine in an earlier style vehicle. For the Vortec we offer the above referenced part numbers and also in extended length if needed. Each comes with thorough instructions to make installation easy as possible. Below is a list of some of the applications available. On our website and in our catalog a complete break down is listed. 1985-1989 Tuned Port - Mass Air Flow (MAF), 1985-1992 Throttle Body Injection (TBI), 1990+ Tuned Port - Speed Density (MAP), 1994-1997 LT1 From Roadmaster, Camaro, Corvette, or Cadillac, 1997-1998 LS1, 1999-2002 LS1, 1999-2004 Corvette - Electric Throttle Body, 1999-2003 Vortec V8 - Cable Throttle Body, 2004-2008 Vortec V8 - Electric Throttle Body, 2005-2006 LS2/E40 24X Reluctor - None Electric Tranmission Only, 2005-2006 LS2/E40 24X Reluctor and 4L65E Transmission, and 2007-2008 LS2/LS3/LS7 - E38 58X Reluctor w/ None Electric Transmission .
1 answers

Would this fit a 94 Fleet wood caddi ?

Dallas, TX
May 23, 2011

Would this fit a 94 Fleet wood caddi ?

Answers

May 25, 2011
John
This harness is specific to a 99-02 LS1. Part number 91009497 is an engine wiring harness that fits the 97-97 LT1 V8 engines found in Roadmaster, Camaro, Corvette, or Cadillac. It is specific to these years and engine series. We offer several engine wiring harness kits and each is year and model specific.
Page 1 of 1

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Take the fear out of electronic fuel injection! These engine wiring harnesses are designed to make your engine transplant effortless. Each new harness contains in-depth application-specific instruction sheets, clearly marked factory GM connectors, labeled GXL jacketed wire, GM color coding, and pre-fitted corrugated slit loom for an extra value and professional look. All un-needed emissions wiring is eliminated to make the install as simple and reliable as possible.

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  • Made from premium grade GXL jacketed automotive wire
  • Most wiring is larger gauge than stock application for durability
  • No splices to reduce points of failure
  • All primary grounding is done at the head or block and grounding points are isolated from each other to reduce electrical interference and minimize ground looping
  • Harness wiring matches GM wiring configuration and jacket colors follow GM color coding for easy identification
  • All electrical connectors are made by Delphi or Packard and are direct fit for GM cars and trucks
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  • Diagnostic connector or OBD2 port for connection to scanners and tuning tools
  • Made in the USA.
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