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
🚤 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
