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FuelTech Water Sports Harnesses

These harnesses connect a FuelTech ECU to the factory wiring on popular racing PWCs, so you can replace the stock ECU without building a loom.

Choosing a PWC harness

  • Yamaha — FT550 harnesses for 2008–2017 1800 (3-plug) and 2018–2025 1800/1900 (2-plug).
  • Sea-Doo — FT550 Rotax 300 harness and an FT450 harness for 2009-and-older Rotax skis. Some versions bundle an ECU and igniter.
  • Kawasaki — FT550 SX-R 1500 plug-and-play and racing harnesses.
Year matters. Each harness covers specific model years and engines. Check yours against the product listing.

Back to the full FuelTech Wiring Harnesses range.

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FuelTech FT550 Sea-Doo Rotax 300 adapter harness
FuelTech

FuelTech FT550 Rotax 300 Harness

$1,299.00
2002100542
FuelTech FuelTech Sea-Doo PWC FuelTech Water Sports FuelTech Water Sports Harnesses FuelTech Wiring Harnesses
This adapter harness installs a FuelTech FT550 ECU on Sea-Doo watercraft with the Rotax 300 engine, 2010–2023, using the factory wiring. It plugs directly...
FuelTech FT550 Kawasaki SXR 1500 plug and play racing harness
FuelTech

FuelTech FT550 Kawasaki SXR 1500 Racing Harness

$1,299.00
2002114378
FuelTech FuelTech Water Sports Harnesses FuelTech Wiring Harnesses
A plug and play racing harness built specifically for the Kawasaki SXR 1500. It replaces custom wiring on competition skis and ties directly into...
FuelTech FT550 Kawasaki SX-R 1500 jet ski wiring harness adapter
FuelTech

FuelTech FT550 Kawasaki 1500 Harness

$499.00
2002110560
FuelTech FuelTech Kawasaki PWC FuelTech Water Sports FuelTech Water Sports Harnesses FuelTech Wiring Harnesses
This adapter harness lets you remove the factory ECU from a Kawasaki SX-R 1500 and run a FuelTech FT550 standalone in its place for...
FuelTech FT550 2024 Sea-Doo Rotax 325 harness
FuelTech

FuelTech FT550 2024+ Rotax 325 Harness

$1,099.00
2002112825
FuelTech FuelTech Performance Accessories FuelTech Sea-Doo PWC FuelTech Water Sports FuelTech Water Sports Harnesses FuelTech Wiring Harnesses
This FuelTech adapter harness installs an FT550 ECU on 2024 and newer Sea-Doo models with the Rotax 325 engine, plugging straight into the factory...
FuelTech FT550 ECU with Yamaha 1800/1900 2-plug adapter harness
FuelTech

FuelTech FT550 2018-2025 Yamaha 1800/1900 Harness (2 plug)

$1,299.00
2002100540
FuelTech FuelTech Water Sports FuelTech Water Sports Harnesses FuelTech Wiring Harnesses FuelTech Yamaha PWC Yamaha
A 2-plug adapter harness for installing a FuelTech FT550 ECU on 2018–2025 Yamaha 1800/1900 WaveRunners. It connects the ECU to the watercraft with minimal...
FuelTech FT550 2008-2017 Yamaha 1800 3-plug adapter harness
FuelTech

FuelTech FT550 2008-2017 Yamaha 1800 Harness (3 plug)

$1,099.00
2002110173
FuelTech FuelTech Water Sports FuelTech Water Sports Harnesses FuelTech Wiring Harnesses FuelTech Yamaha PWC Yamaha
This adapter harness installs a FuelTech FT550 ECU on a 2008–2017 Yamaha 1800 watercraft using the factory wiring. It plugs straight into the OEM...
FuelTech plug and play Sea-Doo Rotax wiring harness for FT450 and FT550 ECU
FuelTech

FuelTech FT450 2009 & Older Rotax Harness

$949.00
2002100595
FuelTech FuelTech Water Sports Harnesses FuelTech Wiring Harnesses
This plug and play harness lets you pull the factory Siemens ECU out of a 2009 or older Sea-Doo and run a FuelTech FT450...
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