F25 Tach Harness?

[zatffej]

I Just Replaced My Tachometer W/ Pn 6y7-83540-90-00. Analog Tach With Oil And Water Temp Warning Lights Which My Old One Didn't Have. I Would Like To Utilize These Warning Lights But I Need To Know What Harness To Order? Can I Just Tie In Somewhere Without Buying The Harness?

[boats.net]

That harness is available in different lengths,
6Y5-83653-00-00 16ft harness
6Y5-83653-10-00 20ft harness