tach wire location on 2008 20hp

[tryn2lrn]

Does anyone know where the tachometer wire is located on a F20PLR. I am having severe interference in my dash mount fish finder and it was suggested I disconnect the tach wire from the motor to see if that fixes it. I have tried a seperate battery and isolating transducer wire as much as possible. This is driving me nuts.

[boats.net]

Tach wire is the green wire at key switch.

[tryn2lrn]

Thanks for the reply. Is there a way to disconnect it farther back at the motor? If it is the tach wire is causing my interference I think traveling up to the keyswitch is far enough to make noise in the whole wire bundle. Is there a connector on the motor for a wiring harness or there just a few individual wires going up front?

Thanks