Hello I have a 1992 Johnson 3 cyl 60 hp, the tach I have is (I think...Due to it has a M logo on face) a Medallion techometer. Anyway the tach has 4 different settings on the rear of it 1, 2, 3 & 4. I removed the tach and engine from a boat I de-rig to swap over onto the Carolina Skiff. I never...