The number one question we get asked is “Which stage do you recommend for my LS Swap?”
The stage of LS Conversion standalone harness you choose comes down to several factors including your skill level, budget and the vehicle you’re swapping the LS into. In this post we’ll break down what’s included in each stage, the skills required to install each, the limitations and what vehicles suit each the best.

STAGE ONE:
Introduction:

Our most budget friendly option, the entry point to our range. A stage one harness is also the most flexible. Essentially, we simplify and label the inputs and outputs of the standard harness and provide an OBD2 connector and Accelerator Pedal Connector (Where Applicable), provide you with instructions and let you install the harness yourself. There are no relays or fuses included with this kit.

Inclusions:

• Labelled Ign, Battery Inputs, A/C input
• Single Speed Fan Trigger Output
• Fuel Pump Output Trigger Output
• Tachometer & Speedometer Signal Output
• Reverse light & Park Neutral Safety (Transmission Dependant)
• OBD2 Connector, Pedal Connector (Where applicable)
• Full Colour, Plain English Instructions

Limitations:

• Does not include any relays or fuses
• Does not include engine lamp output or 2 speed fans
• Requires the most wiring on user end
• Requires in depth understanding of swap vehicles electronics
• Requires TCC Switching Relay (Auto)

Vehicles it Suits:

Generally people using this kit will be undertaking a full rewire of their vehicle and already have a complete relay and fuse box installed or are having a professional install their engine. Otherwise perfect for people who are installing into an existing EFI vehicle with a fuel pump relay, fan relays and they have a good understanding of how these systems work.

Popularity:

Around 10-15% of customers choose this option.

Wires to Connect to Run:

6

• Ignition x 3 (From Fused Relay Source)
• Battery x 1
• Fuel Pump x1 (To Fused Relay)
• Earth 

Skills:

• Good Understanding of EFI Systems and their Fundamentals
• Good Understanding of intended swap Vehicles Electronics
• Previous experience crimping open barrel electrical terminals
• Good understanding of how to use a multimeter

Tools:

• Soldering Iron
• Side cutters
• Wire Strippers
• Open Barrel Crimpers
• Multimeter

Cost:

From $380

 

STAGE TWO:
Introduction:

Our most popular option, the middle of our range and still extremely flexible. Includes fuses and relays for the main engine functions (Injectors, Coils, Sensors, Computer, Transmission) while maintaining flexibility on the remaining outputs. Simplified harness with plug in relay fuse box and labelled colour coded outputs. Comes with OBD2 Connector and Accelerator Pedal Connector (Where Applicable)

Inclusions:

• Single Ignition signal input
• Single Battery Connection with Lug and Fuse
• Single Speed Fan Trigger Output
• Fuel Pump Output Trigger Output
• Tachometer & Speedometer Signal Output
• Reverse light & Park Neutral Safety (Transmission Dependant)
• OBD2 Connector, Pedal Connector (Where applicable)
• Full Colour, Plain English Instructions
• Brake Signal Input (Auto Only)

Limitations:

• Does not include engine lamp output or 2 speed fans
• Does not include Fuel Pump Relay or Fan Relay/s

Vehicles it Suits:

This kit is used in a wide variety of swaps. Everything from GQ patrols to Lawnmowers to E30 BMW’s. This kit allows flexibility while giving you the basic fuses and relays. You may be installing this kit in an existing EFI car and using the factory fuel pump relay, or you may be wiring your own, you may be adding thermos fans or you may be using a clutch fan.

Popularity:

Around 60% of customers choose this option.

Wires to Connect to Run:

3

• Ignition x 1
• Battery x 1
• Fuel Pump x1 (To Fused Relay)

Skills:

• Average Understanding of EFI Systems and their Fundamentals
• Average to Minimal Understanding of intended swap Vehicles Electronics
• How to use a test light

Tools:

• Soldering Iron
• Side cutters
• Wire Strippers
• Test Light

Cost:

From $590

 

STAGE THREE:

Introduction:

Our most comprehensive option, top of the range with all the fruit. Includes fuses and relays for main engine functions (Injectors, Coils, Sensors, Computer, Transmission) plus 25a of fuel pump relay and 2x 25a fan relays. Custom measured flying leads for your fuel pump, fans and battery connection. Simplified harness with plug in IP66 sealed & labelled relay/fuse box and labelled colour coded outputs. Comes with OBD2 Connector and Accelerator Pedal Connector (Where Applicable). Adds the bonus of shift light output (Manual/th400 only), Engine Light Output and 2 Speed fans.

Inclusions:

• Single Ignition signal input
• Single Battery Connection with Lug and Midi Fuse
• Dual Fan Outputs (Fan Hi & Fan Lo)
• Single Fuel Pump output
• IP66 Sealed Fusebox with Labelled Fuses & Relays
• Tachometer, Speedometer, Engine Malfunction Indicator Lamp (Engine light), Shift Lamp (Where Applicable) Signal Outputs
• Reverse light & Park Neutral Safety (Transmission Dependant)
• OBD2 Connector, Pedal Connector (Where applicable)
• Full Colour, Plain English Instructions
• Brake Signal Input (Auto Only)

Limitations:

• Limited to 240w of Fan Power per Circuit (Some 16” Thermo Fans will draw over this)
• Limited to 240w of Fuel Pump Power (Some large twin/triple pump setups will draw over this)

Vehicles it Suits:

This kit is used in a wide variety of swaps and is especially popular with older vehicles like kingswoods, early commodores VB-VL, early patrols, or anything pre 1990 or so. This kit replaces all the engine wiring in the vehicle and simplifies it to a small single fuse box. This kit is also often used in racecars which have had their wiring simplified and want an all in one solution to control the engine.

Popularity:

Around 30% of our customers choose this option.

Wires to Connect to Run:

3

• Ignition x 1
• Battery x 1
• Fuel Pump x1 (Direct to Fuel Pump)

Skills:

• No Understanding of EFI Systems Required, Basic Understanding of Simple electronics required
• Minimal to No Understanding of intended swap Vehicles Electronics
• How to use a test light

Tools:

• Soldering Iron
• Side cutters
• Wire Strippers
• Test Light

Cost:

From $1120

We hope this clears up the various stages we offer, if you still have questions or aren't sure, shoot us an email at dirtysouthre@gmail.com or call us on (03) 5902 8472