ok Guys so I have an older boat. 1972 Caravelle with a 165 HP inboard mercruiser.
The main dash panel has the ignition key with a 2'' trim gauge, 2'' oil PSI, 2" AMPS,2" water Temp and a 3 1/4" RPM.
then on the left side of dash panel It has a stand mounted Spedometer and the fuel gauge is...