Need help or any info my 06 supreme has a warning horn going off about every 3 to 5 minutes its two beebs then done. Temp gauge is 175 deg. oil pressure is normal no other signs of problems. I did just change the starting battery because the old one failed. trans lube full V drive oil full it has a Faria gauge & it shows only 11.4 volts I cant find any shop manual on this engine its a mercury 5.7 black scorpion that shows this warning horn or what it does any help will be great!
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