My new-to-me boat has twin 150 yamahas. The gauges are twin tacs and another single fuel management gauge. I am just getting used to the boat, and started up the engines this weekend on the hose. I noticed that the fuel management gauge only comes on when the starboard engine is running. It doesn't come on when the port engine is running. I'm off to get a dual hose setup from home depot to run both engines at once.
Is this normal? Could it only be reading one engine? I looked at the book and it shows a spot where you can have it read the S, or P engines, or a letter for both that I can't recall right now.. But on this system I can't see anything that shows P & S.