Re: Help Needed
Since you already have the tachometer on the boat, it is very probable that it was already switched to the 6p position or did not have a switch. It can be tested later with a portable meter anyway.
On the engine, there is a elongated bar of screw connections called a terminal block.
On the engines two wires lead from under the flywheel to the terminal block. They are either both yellow, or one is yellow and one is yellow and gray. On early engines, connected to one of those yellow/yellow-gray wires at the terminal block is a solid gray wire. That wire leads through the harness and eventually to the tachometer. It is the sender wire.
Later models have the regulated rectifier. On the regulated rectifier, the sender wire goes from the terminal block, through the regulated rectifier, then to the harness and eventually to the tachometer.
In either case, a solid gray wire leaves the main harness at the remote control end.
