Installing New Multfunctional Tach w/ New 150 4-Stroke

[sberg]

New Sea Chaser 180 with Faria Guages. Have Multi-Functional Yamaha Tach and was going to install. Looks like none of the plugs from the engine wiring harness exist that plug into the Multi-Functional tach hareness. Any ideas?

Thanks!

[boats.net]

The engine will have a off white colored square connector next to main harness connector, the gauge trim/oil harness plugs into that connector.