2001-2014 Honda BF/BFP8D, BF/BFP9.9D Outboards Shop Manual, Page 33Get this manual
BFBD-BF9.9D - Overheat Indicator (Red) Test (Remote control type only)
Disconnect the thermo sensor f- Indicator ON- J OK, test is complete connector and connect an 100 fl resistance between the terminals (green black and red blue) Start the engine and check the overheat indicatorIndicator OFF