KAVIUS 9354896 Standalone Harness Instruction Manual

: June 1, 2024
: KAVIUS

Table of Contents

LS TRUCK 99-06 W/ T56 STANDALONE WIRING
Recommended Tools
COOLING FAN RELAY DIAGRAM
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Download This Manual (PDF format)

KAVIUS 9354896 Standalone Harness

KAVIUS-9354896-Standalone-Harness-PRODUCT

Specifications

Compatible with GM 1999 and newer Vortec engines with Drive By
Cable (DBC) throttle body
Suitable for use with T56 or non-electronic transmissions

Requirements

Remove VATS from the PCM for the engine to start.
Utilizes two oxygen sensors on each side of the engine, only the front sensors are used.
Does not include provisions for EGR, Air Pump, and CCP features.

Compatible Parts

Item Description	Part Number
MAIN COMPUTER (PCM)	GM# 9354896 OR 12200411

Recommended Tools

Terminal Crimping Tool
Wire Strippers
Electric Drill
2 Hole Saw (for rubber grommet for the firewall)

Installation

Mount the harness under the dash or in the kick panel on the right side of the vehicle.
Route the harness away from sharp edges, exhaust pipes, and hinges.
Ensure proper grounding (battery, chassis, and engine).

Wiring Routing

Disconnect power by removing the negative battery cable.
Mark and drill a hole in the firewall for wiring passage.
Feed the engine section of the wiring through the hole.
Route the harness to corresponding sides in the engine compartment.

FAQ:
Q: What should be done if the engine does not start after installation?
A: Ensure that VATS has been removed from the PCM as it is necessary for the engine to start.

LS TRUCK 99-06 W/ T56 STANDALONE WIRING

HARNESS, DBC
This harness is designed to be a complete wiring harness for fuel injection system on GM 1999 and newer Vortec engines with Drive By Cable throttle body and T56 or non- electronic transmissions.

Never disconnect the battery or the PCM while the ignition is turned “ON”.
Never short any wires in the wiring harness to ground (with the exception to the ground wires) thiscan cause damage to the PCM.
A Multi-meter with a minimum of 10-Mohm resistance is required for test circuits. Do not back probe wires, this can lead to permanent wire damagee.

Requirements

All Vortec engines require VATS to be removed from the PCM. If the system is not removed from the PCM the engine will NOT start.
Vortec engine harness utilizes two oxygen sensors on each side of the engine, one before and after the catalytic converter, The rear 02 sensors (after the catalytic converter) are NOT used.
All Vortec engines utilize an EGR, Air Pump, and CCP features for emission control, this harness does not include provisions for EGR, Air Pump, and CCP are not necessary for engine operation. PCM programming may be necessary to avoid storing a Diagnostic Trouble Codes (DTC) for the absence of emission equipment.
It is recommended that you use a VSS when using a T56 or nonelectric transmission (TH350, TH400, Powerglide, 700R4, etc,). Failure to use VSS can result in an unexpected stalling during hard braking or an inoperable throttle body.
A two-position brake switch is also recommended when using drive by wire throttle bodies. The brake switch should be closed (not electronically connected) when brakes are not being applied and open (not electronically connected) when brakes are being applied. This is the opposite of a standard brake switch.

COMPATIBLE PARTS

Recommended Tools

Terminal Crimping Tool
Wire Strippers
Electric Drill
2” Hole Saw (for rubber grommet for the firewall)

The wiring harness is designed to mount under the dash or in the kick panel on the right side of the vehicle.
Route the harness away from sharp edges, exhaust pipes, and hinges.
Allow enough slack in the harness at places where movement could possibly occur.

Proper grounding is crucial for the harness to operate (battery, chassis, and engine). This harness is equipped with ground wiring on the rear portion of the driver side cylinder head and adjacent the fuse block.

Connect the chassis ground strap or cable to the negative side of the battery
Connect the engine ground strap or cable to the chassis
Connect a ground strap from the engine to the body

Disconnect power from the vehicle by removing the negative battery cable from the battery.

Mark the position that the wiring harness will go through the firewall with a metal punch. Using a 2″ hole saw, drill a hole into the firewall. Debur the hole to ensure no damage to the wires will occur.
From the inside of the vehicle, feed the engine section of the wiring through the 2″ hole that was previously made.
Route the engine compartment harness to the corresponding sides (driver and passenger). The driver side section has the connectors for the alternator, MAF, and ECT.
Route the battery positive and crank sensor connectors behind the passenger head and under the exhaust manifold.
Route the fuse block/relay center and PCM connectors to the preferred mounting positions. Keep the PCM away from moisture or damage may occur.
Locate the black wires in the driver side group that end in two ring terminals. These are engine grounded.
Using care to connect the two PCM connectors to not bend any of the pins. The connectors are color coded.
All wires not being used should be taped and secured to avoid creating an unwanted short.
Permanently mount your PCM to desired location.
Once all connection have been made throughout the wiring harness, reconnect the battery.

CAUTION : BE SURE THE IGNITION IS OFF WHEN RECONNECTING THE BATTERY OR DAMAGE TO THE PCM WILL OCCUR.
A fuel pump relay is provided with the signal side of the relay being pre wired. The harness has two blade terminals to complete this circuit. Ensure that properly sixed and fused wiring is used. Insert the terminal into the relay holder per figure two.

Using care to connect the two PCM connectors to not bend any of the pins. The connectors are color coded.
All wires not being used should be taped and secured to avoid creating an unwanted short.
Permanently mount your PCM to desired location.
Once all connection have been made throughout the wiring harness, reconnect the battery.

CAUTION : BE SURE THE IGNITION IS OFF WHEN RECONNECTING THE BATTERY OR DAMAGE TO THE PCM WILL OCCUR.

ACCESSORY WIRES

BROWN

| ****

MIL LAMP GROUND

| THROUGH AUTOMOTIVE

LIGHT TO 12V

BLACK

| ****

SPEEDOMETER

| SPEEDOMETER

MODULE

WHITE

| ****

TACHOMETER

| ELECTRONIC

TACHOMETER

DARK GREEN

| ****

FAN 1 GROUND

| GROUND SIDE OF

FAN RELAY 1

DARK BLUE

| ****

FAN 2 GROUND

| GROUND SIDE OF

FAN RELAY 2

ORANGE

| PARK NEUTRAL

SIGNAL

| TO GROUND (IN

PARK AND NEUTRAL)

**** PURPLE| BRAKE SIGNAL/TCC

GROUND

| ****

TO 12V

BLACK MULTIPLE

WIRES

| CHASSIS GROUND

(RING TERMINAL)

| ****

CHASSIS GROUND

RED

| ****

IGNITION RELAY

| 12V IGNITION

SOURCE

MULTIPLE| PCM CONNECTORS| PCM

COOLING FAN RELAY DIAGRAM

$KAVIUS-9354896-Standalone-Harness- $2$$ NOTE: If using a Normally Closed Cruise Control Switch, follow the diagram below to wire up your cruise control.