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I have a 1995 c 85hp yamaha. have the pro series tach and just ordered the 0-50 mph speedometer....want to install either a trim gauge or water pressure gauge....dont have the harness for trim gauge......is it difficult to install the sender for water pressure as i think that is more important,,and do i have to use a yamaha pitot tube for the speedometer or can i use universal...thanks
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Water pressure sender(688-83667-00-00) just threads into block, same as 90hp block
40-90TempSenderPort.JPG
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