Suzuki monitor tach?

[Fisherman]

I have a 2004 DF140 with a newly dealer installed monitor tach, that has only the tach wired not the monitor. Is there a wiring harness to do this? Since I am new to this forum I will add that after having to own this piece of junk, I will NOT put a Suzki on my new boat next year!!!!!!!!!!!!!!11

[boats.net]

The wires should be there from main engine harness.