2004 Yamaha 150, problem w/ temp/light

[green with envy]

LED Light above the temp icon is blinking...the motor has a strong discharge stream....never shut down when running.....and the light came on again immediately after letting it sit for90 minutes...Boat runs fine and only has 40 hrs on it........is it a wire? sending unit? t-stat? and what does yamaha refer to these parts as??please help thanks.

[boats.net]

Start with checking engine temp to see if is overheating.

[green with envy]

the light is on whenever the key is in the on position......the thermo switches on top of block seem ok .... I think i have ruled out the tstats, the thermosensor assembly onthe botom of block could be it but im not sure...otherwise the boat runs perfect thanks

[rodbolt17]

double check the dip switch settings on the tach.

[green with envy]

the dip switches are located on the back side of the tach, correct???

[rodbolt17]

yes, under a rubber plug.
sw1 on,sw2off,sw3off on a 2004 two stroke 150.

[green with envy]

took the tach off, removed the rubber disc on back and thereare no dip switches.....this light is a pain in my ass...how about a piece of black tape over it unless you guys have any other suggestions..