Wiring Diagram for mercury 150

[randomwalk]

I have a 2005 SeaFox with a 2004 Mercury 150 Salt Water Series engine. I need the wiring diagram to install a new tach

 

[Don S]

Re: Wiring Diagram for mercury 150

On the tach, it's purple for 12V +, black is ground, blue is for the instrument light, and gray is the signal from the motor.