Mercury Racing 2.5 EFI Wiring Diagram
- Mike Hill
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- Nov 23, 2023
- 1 min read
Updated: Sep 21, 2024
This powerhead wiring diagram is for the Mercury Racing 2.5 Liter Outboard with the Horn-style side-injected EFI system found on the 260 HP, 300 Drag, S3000, and ROS engines.
Mercury Racing 2.5 ECU Injector Harness
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