Yamaha 150hp tachometer+autopilot

[maranello]

Hi!
How i can connect Yamaha 150hp tachometer to Garmin autopilot (GHP10)?
Which wires plug together?

Thank you in advice,
maranello

[rodbolt17]

depends on the model number of the 150 and the part number of the gauge,

[maranello]

Yamaha F150TXRC and gauge 704

[rodbolt17]

cant do it on that motor
control box may be a 704 but not the gauge.