Need help connecting tach gauge

[mav6759]

Here what I have, I have a OMC set of controls with the following wiring coming from the controls. Red, Black/white, Black/yellow, Yellow/red, Purple and Purple/white. What I'm tring to fine out is the Sender for the tach gage. I have the following wires from the tach, Black, Gray, Purple... I connected the purple wire from the tach to the purple switch wire from the controls. I then connected the black wire from the tach to the fuse box. All I have left is the Gray wire (which I'm assuming is the sender wire) from the tach. Do I have this connected properly and where on the controls does the Gray wire go....

Mav6759

 

[Bondo]

Re: Need help connecting tach gauge

Ayuh,.... On the tach, purple is ignition power,... Black is Ground, 'n yes, grey is signal...

It sounds like yer controller ain't wired for the tach...

 

[mav6759]

Re: Need help connecting tach gauge

Now that what I wanted to fine out, because I do have a gray wire but its on the motor. I will send pictures of the harness from the controls. I don't know if I would have to run the gray wire from the tach to the gray wire on the engine harness, If so, I would have to do that for the temp gauge and Tilt/trim. . Ok here are the pictures of the harness from the controls that coinnect to the motor. As you can see in the pictures, I have all the colors of the rainbow. As you can also see I have the Gray wire coming from the controls. Now, the harness that connects to the controls has 3 plug conntors on the other end, (which connects to the harness of the motor) 2 square plugs that connects to the harness of the motor and one triangler plug that connects to the tilt/trim. My question is, is this the gray wire for the tach.

 

[mav6759]

Re: Need help connecting tach gauge

Ok update, I just pulled the harness from the inside wall of the boat next to the controls. And I found a Gray wire, Is this the gray wire that I need for the tach, I took a picture of it.