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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 into the OEM harness and includes what is needed for a quick FT550 installation, with two spare extra connectors for the FT550's inputs and outputs.
FuelTech FT550 Sea-Doo Rotax 300 2010-2023 adapter harness manual (PDF)
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