# 278002943 Seadoo Wiring Harness | Genuine Used Part

🔧 Product Description

  

Genuine Sea-Doo Wiring Harness - Part Number: 278002943

  

This genuine Sea-Doo wiring harness is the main electrical harness used on listed Sea-Doo 4-TEC personal watercraft. It connects major electrical-system components, sensors, relays, switches and control circuits through the factory loom layout.

  

⚙️ Key Features

  

• Genuine Sea-Doo wiring harness

• OEM part number 278002943

• Main electrical harness for listed 4-TEC models

• Supersedes earlier OEM harness references 278002492 and 278002814

• Direct-fit OEM electrical-system component for listed GTI, GTR, RXP-X and WAKE assemblies

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 278002943 → Supersedes 278002814

• 278002814 → Supersedes 278002492

• 278002492 (earlier OEM reference)

  

OEM / Related Numbers:

  

• 278002492

• 278002814

• 278002943

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Sea-Doo 4-TEC main electrical harness assemblies

  

Typically suits:

  

• Engine models:

• 2011 GTI 130 (1503 DT) — Electrical Harness, Main

• 2011 GTI 130 (1503 DT) — Electrical System

• 2011 GTI Limited 155 (1503 NA) — Electrical Harness, Main

• 2011 GTI Limited 155 (1503 NA) — Electrical System

• 2011 GTI SE 130 (1503 DT) — Electrical Harness, Main

• 2011 GTI SE 130 (1503 DT) — Electrical System

• 2011 GTI SE 155 (1503 NA) — Electrical Harness, Main

• 2011 GTI SE 155 (1503 NA) — Electrical System

• 2011 WAKE 155 (1503 NA) — Electrical Harness, Main

• 2011 WAKE 155 (1503 NA) — Electrical System

• 2012 GTI 130 (23CA, 23CB) — Electrical Harness Main

• 2012 GTI 130 (23CA, 23CB) — Electrical System

• 2012 GTI 130 (23CS, 23CR) — Electrical Harness, Main

• 2012 GTI 130 (23CS, 23CR) — Electrical System

• 2012 GTI Limited 155 (39CA, 39CB) — Electrical Harness Main

• 2012 GTI Limited 155 (39CA, 39CB) — Electrical System

• 2012 GTI Limited 155 (39CS) — Electrical Harness, Main

• 2012 GTI Limited 155 (39CS) — Electrical System

• 2012 GTI SE 130 (24CA, 24CB, 24CC) — Electrical Harness Main

• 2012 GTI SE 130 (24CA, 24CB, 24CC) — Electrical System

• 2012 GTI SE 130 (24CS, 24CR) — Electrical Harness, Main

• 2012 GTI SE 130 (24CS, 24CR) — Electrical System

• 2012 GTI SE 155 (30CA, 30CB) — Electrical Harness Main

• 2012 GTI SE 155 (30CA, 30CB) — Electrical System

• 2012 GTI SE 155 (30CS) — Electrical Harness, Main

• 2012 GTI SE 155 (30CS) — Electrical System

• 2012 GTR 215 — Electrical Harness Main

• 2012 GTR 215 — Electrical System

• 2012 RXP-X 260 & RS — Electrical Harness Main

• 2012 RXP-X 260 & RS — Electrical System

• 2012 WAKE 155 (35CA, 35CB) — Electrical Harness Main

• 2012 WAKE 155 (35CA, 35CB) — Electrical System

• 2012 WAKE 155 (35CR, 35CS) — Electrical Harness, Main

• 2012 WAKE 155 (35CR, 35CS) — Electrical System

• 2013 GTI 130 — Electrical System

• 2013 GTI Limited 155 — Electrical System

• 2013 GTI SE 130 — Electrical System

• 2013 GTI SE 155 — Electrical System

• 2013 GTR 215 — Electrical Harness

• 2013 GTR 215 — Electrical System

• 2013 RXP-X 260 & RS — Electrical Harness

• 2013 RXP-X 260 & RS — Electrical System

• 2013 WAKE 155 — Electrical Harness

• 2013 WAKE 155 — Electrical System

• 2014 GTI 130 — Electrical Harness Main Harness

• 2014 GTI 130 — Electrical System

• 2014 GTI Limited 155 — Electrical Harness Main Harness

• 2014 GTI Limited 155 — Electrical System

• 2014 GTI SE 130 — Electrical Harness Main Harness

• 2014 GTI SE 130 — Electrical System

  

• HP Range: Approximately 130HP - 260HP

• Engine Type: Sea-Doo 4-TEC Electrical Harness System

• Year Range: Approximately 2011 - 2014

  

🔌 Function

  

The wiring harness carries electrical power and signals between the craft's control modules, switches, sensors, starting circuit and engine-management components.

  

Common signs of failure:

  

• Intermittent electrical faults

• No-start or poor start authorization

• Corroded or damaged connectors

• Broken, rubbed-through or burnt wiring

• Fault codes caused by open circuits, shorts or poor continuity

  

📦 Condition

  

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated

## Details

- **Price:** 450.0 AUD
- **Vendor:** Sawley's Auto and Marine
- **Tags:** Sawley’s AAM Used Parts – Sea-Doo Parts | Jet Ski Parts & Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 450.00 AUD | In stock |

## Images

- 278002943 Seadoo Wiring Harness | Genuine Used Part
- 278002943 Seadoo Wiring Harness | Genuine Used Part
- 278002943 Seadoo Wiring Harness | Genuine Used Part
- 278002943 Seadoo Wiring Harness | Genuine Used Part
- 278002943 Seadoo Wiring Harness | Genuine Used Part
- 278002943 Seadoo Wiring Harness | Genuine Used Part
- 278002943 Seadoo Wiring Harness | Genuine Used Part
- 278002943 Seadoo Wiring Harness | Genuine Used Part
- 278002943 Seadoo Wiring Harness | Genuine Used Part
- 278002943 Seadoo Wiring Harness | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/278002943-seadoo-wiring-harness-genuine-used-part)
> Updated: 2026-07-02