150 efi has tilt trim sender but no Gauge

[Kmek]

I want to add T/T gauge . I can see brown wire with white tracer on motor.Not sure if it goes to dash or not.
What do I need up front.
Where can I get a diagram? Any guidance is appreciated.
Kelly

 

[boscoe]

Applicable service manual should have what you need.

 

[Kmek]

Applicable service manual should have what you need.

Agree- just looking for some insight from one that may have experienced the same issue.