Wiring diagram for twin Yamaha 115 F motors

[Tony Weber]

Hi I am new to this site and have seen many very good posts.

I have just fitted two Yamaha 115 Fs to my sea truck which is a 24 foot twin tunnel river boat. I am having difficulty getting the trim to work for both motors from the control. The individual trims both front and rear work fine. Can anyone help with a diagram. I would also like to confirm that the wiring of the gauges is correct - all seams to work fine.

The port motor while starting and running fine will not shut down without removing the battery terminal. The is a loose whit wire in the engine compartment which I believe has something to do with this?


Any help will be most appreciated.

[99yam40]

Not sure about the 4 strokes but the white wire for the 2 strokes was for shutting down.

I have also read the disconnection battery or even a bad connection on the battery where it opens up will fry some of the electronics on these out board motors, hope you have not done bad things to it.

[Tony Weber]

Not sure about the 4 strokes but the white wire for the 2 strokes was for shutting down.

I have also read the disconnection battery or even a bad connection on the battery where it opens up will fry some of the electronics on these out board motors, hope you have not done bad things to it.

Yes I have also heard this but believe components are ok at this time - it has something to do with the white wire and a diagram woudl help me identify it. I am reluctant to guess by earthing it as this will probably fry something

[Ldavidgrover]

Disconnect the switch on the pan and see if that changes anything. most likley the side pan switch is messed up causing erratic movement