01_6A-LS1
01_6A-LS1 Direct-Fit Custom Harness for 1992 Full Size Chevy P/U 6.0 LQ9 Direct-Fit Custom Harness for 01 Silverado with Corvette LS1 Direct-Fit Custom Harness for 96 Imapala SS with an LS3
(2 customer reviews)

$850.00

Direct-Fit LSx & Vortec engine wiring for 1982-2004  Chevy S-10, Blazer,  GMC Sonoma, S-15, Jimmy, Envoy, Oldsmobile Bravada

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Description

Direct-Fit LSx, Vortec Engine Wiring for 1982-2004  Chevy S-10/ Blazer,  GMC Sonoma / S-15/ Jimmy

Our Direct-Fit custom wiring harnesses are plug-and-play, custom built, and designed specifically for your project utilizing 97-up LSx or Vortec small block. Each harness is built from scratch specifically for your engine and vehicle combination. In most cases a Direct-Fit harness will allow you to retain all of the factory vehicle functions and gauges when doing an engine swap.

The main difference between our Direct-Fit custom harnesses and a standalone engine management harness is that the custom harness is exactly that… meaning it is built custom for your application. The standalone engine management harness is cheaper because it is designed to do nothing except run the engine, and supply any necessary signals such as speedometer and tachometer. The custom harness is built to include all of the functions that your vehicle will use, such as any factory gauges that can be used, any connectors that go to or through the firewall, relays to control the fans via the computer, and we will utilize the factory Neutral Safety switch if possible.

A Direct-Fit custom harness from Current Performance Wiring contains all of the electrical connections that are required for the vehicle that the engine is being installed in. These harnesses include relays for the fuel pump, starter, fans, A/C, etc. All fuses that are not in the vehicle already are included in the complete custom harnesses as well.

This harness is not only designed to plug right in to the project vehicle and engine, but since they are completely built from scratch, they can be made to your specs. If you are going for a clean install and want the ECU inside the passenger compartment, or all the way back in the trunk, we can make it exactly how you need.

Direct-Fit Custom Harnesses come covered in standard OE split loom but optional Braided loom is available for an extra charge.

S-10 V8 conversion harnesses are our specialty. Any S-10 or Sonoma of any year can be used as a nice bed for a V8 transplant. We build custom plug-and play-harnesses for the LSx and Vortec 4.8, 5.3, 6.0, 6.2 engines for any year GM truck. The S-10 trucks are a very popular vehicle for engine swaps of all kinds. Since our specialty is with these trucks, there are many variations offered to install a fuel injected chevy small block engine in any year truck. Below you will find a list of years and options that will make a bit of difference in the harness, as well as some information you will need to help make better decisions for your swap. Please be sure and read the extra information supplied in each year for certain things that you may or may not be aware of. When disconnecting the stock vehicle harness, all you will need to do is unplug it from any connections at the firewall, fenders, and anywhere else that a connector may be. The new harness should simply plug back in to any connectors, there should be no reason to remove or replace anything from the inside of the vehicle in most cases.

Additional information

Weight 8 lbs
Dimensions 12 × 12 × 8 in

1982-1993 (’94 Blazer/Jimmy)

This is the original “square” body style S-truck. The blazer kept the square body style even through ’94. There are many variations between these years as far as the computers and wiring goes, but nothing major. Certain things that matter are whether or not the truck was a 4 cyl, 2.8L 6 cyl., or a 4.3 V6. This will affect how the wiring must be done in order for the truck to function properly after the engine swap.

LSx & Gen III Vortec harnesses are typically $850

LS2/LS3/LS7/LS9 & Gen IV Vortec harnesses are typically $850

1994 and 1995

Things YOU will need to know…

First and foremost… we only build wiring harnesses for 97-up LSx/Vortec and 14-up LTx engines. We DO NOT do wiring for TPI or Carbureted engines in to any of these trucks.

The trucks that came with a PCM mounted on the overflow bottle under the hood may require both the stock truck computer and the ECM from the new engine but not always with the LSx engine. If you intend to keep the ABS, this is when the stock ECU may sometimes be needed. The computer for the engine will pretty much just run the engine and control the electric fans. If the computer is mounted under the dash from the factory, then that computer can be completely replaced with the LTx or LSx computer and all factory vehicle functions can still be maintained.

The A/C is usually wired directly using the V6 trucks existing Low Pressure switch on the dryer. The 4 cyl trucks will require that a Low Pressure switch be added, the easiest way is to simply swap the 2.2L A/C dryer with that of a 4.3, it will thread right back in to the A/C lines.

Alternatively, you can use the LTx or LSx computer to run the A/C which will bump up the idle, and switch the fans on automatically. This method will require the LTx or LSx vehicles pressure sensor be installed in the High Pressure side of the A/C lines. This way is not used much because of all the extra cost and hassle, but we can certainly offer the add in the wiring for it.

In our custom harness there will be a relay/fuse module intended to mount on the front Driver’s side fender in the engine bay. The existing 4 relays on the 94 & 95 truck control the A/C compressor, blower motor, starter, and 3rd brake light. The extra 2 would be the fan relays.

A 2nd Data Link Connector (DLC / ALDL) will be included in the LT1 and LS1 harness. A hole can be drilled and the wires fed through in to the cab, and then the connector can be mounted somewhere inside. Alternatively you can leave the DLC loose in the engine compartment, but anytime a scan tool is plugged in, you will not have direct access from inside the passenger compartment.

LSx & Gen III Vortec harnesses are typically $850

LS2/LS3/LS7/LS9 & Gen IV Vortec harnesses are typically $850

*Ask about our sensor package including MAF and O2 sensors for a complete matched system.

1996 and 1997

Things YOU will need to know…

First and foremost… we only build wiring harnesses for 97-up LSx Vortec and 14-up Gen 5 LTx engines. We DO NOT do wiring for older LT1, TPI or Carbureted engines in to any of these trucks.

The 1996 V6 trucks and certain variations of 1997 V6 trucks will require both the stock S10 computer and the ECM from the engine you’re installing if you intend to retain the original ABS. The computer for the engine will pretty much just run the engine and control the electric fans. Sometimes depending on the truck and what options it has, an LS1 swap can run just the LS1 computer to do everything, and completely replace the original truck computer.

The 4 cyl trucks of these years usually do not require that the stock truck computer be kept, although different situations may require that the stock computer remain.

The ’96 and ’97 trucks are probably the biggest pain to build a harness for, this seemed to be transition years for GM while they figured out what worked and what didn’t. The ’96 model has an ABS control under the hood that is only used in ’96. This system is controlled by the stock truck computer and the wiring runs through the engine harness, whereas most other years have a separate computer and harness to control the ABS.

The ’97 truck uses the same computer as the ’96, but it has a separate computer that controls the ABS which is a different unit than the ’96. The ’97 truck needs the 5th (small) connector from the stock harness retained when the stock truck computer is kept. This connector can simply be removed from the stock harness and plugged in when the new harness arrives. The 5th connector has a single wire in it that simply loops around from one hole to another and pretty much does nothing except tell the computer that it’s there.

The A/C is usually wired directly using the V6 trucks existing Low Pressure switch on the dryer. The 4 cyl trucks will require that a Low Pressure switch be added, the easiest way is to simply swap the 2.2L A/C dryer with that of a 4.3, it will thread right back in to the A/C lines.

Alternatively, you can use the LTx or LSx computer to run the A/C which will bump up the idle, and switch the fans on automatically. This method will require the LTx or LSx vehicles pressure sensor be installed in the High Pressure side of the A/C lines.

In our custom harness there will be a small fuse/relay module intended to mount on the inside of the Driver’s side fender towards the front of the engine bay. The existing 4 relays on the 96 & 97 truck control the A/C compressor, blower motor, starter, and 3rd brake light. The extra 2 we’ll add are for electric fan relays.

A 2nd Data Link Connector (DLC / ALDL) will usually be included in the LT1 harness. A hole can be drilled and the wires fed in to the cab, then the connector can be mounted somewhere inside. Alternatively you can leave the DLC loose in the engine compartment, but anytime a scan tool is plugged in, you will not have direct access from inside the passenger compartment.

 

97 S10 LS1 T56 Wiring Harness
LS1/T56 harness for a 97 2.2L S-10 – No Splicing – built from scratch – ready to install

LSx & Gen III Vortec harnesses are typically $850

LS2/LS3/LS7/LS9 & Gen IV Vortec harnesses are typically $850

*Ask about our sensor package including MAF and O2 sensors for a complete matched system.

1998 & Newer

Things YOU will need to know…

First and foremost… we only build wiring harnesses for 97-up LSx Vortec and 14-up Gen 5 LTx engines. We DO NOT do wiring for older LT1, TPI or Carbureted engines in to any of these trucks.

In 1998 GM redesigned the interior of the S trucks, and made a new grille. To most people, this is pretty much the extent of what they know. On our end of the world, the Electrical system of the 98 and up trucks is VASTLY different from prior years. One main difference you will notice is the Underhood Bussed Electrical Center (UBEC) located in front of the ABS module on the Driver’s side fender. This box contains most of the relays and fuses for the engine components. This makes wiring in a new engine a bit easier because at least most of the power feeds and relay controls go to one central location.

If you are installing any of the LSx or Gen III Vortec engines (4.8, 5.3, 6.0, or 6.2L) We have developed a program that will allow just the LSx computer to be used in a 98 and up S-truck. This single computer will control the engine, allow the gauges (including tachometer) and ABS to work properly, control the electric fans, and control all other functions of the truck just like factory.

There will be 2 extra relays to be mounted on the inside Driver’s fender toward the front of the engine bay to control the electric fans.

The 4 cyl trucks usually end up needing a Low Pressure switch for the A/C instead of the pressure sensor that is used from the factory, the easiest way is to simply swap the 2.2L A/C dryer with that of a 4.3. The dryer and Low Pressure switch can be bought at your local dealership parts counter.

LSx & Gen III Vortec harnesses are typically $850

LS2/LS3/LS7/LS9 & Gen IV Vortec harnesses are typically $850

*Ask about our sensor package including MAF and O2 sensors for a complete matched system.

2 reviews for Direct-Fit GM LSx & Vortec Wiring S10, Blazer, Sonoma, S15 & Jimmy

  1. kenneth

    beyond what i ever expected in quality and function. they built my harness exactly for my truck. everything works and looks as if GM had made it. Thank You CPW.

  2. bradrun7

    This is the second harness I’ve used from them first for a customer on a Colorado second one was for my personal s10 both worked flawlessly & looked great had the best experience with the friendliest staff & awesome customer support. Will never go anywhere else for my wiring needs!!!!

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