how do i hook up a rpm gauge????

mikejallen

Cadet
Joined
May 11, 2009
Messages
25
I have a 16ft 73 bass cat with73 85 horse merc the rpm gauge not working any suggestions on how to hook one of these up thanks??
 

Puddy905

Seaman Apprentice
Joined
Sep 25, 2009
Messages
49
Re: how do i hook up a rpm gauge????

I will take a pictures of where the sender attaches to and post it, unless someone else has one....otherwise the bat and grd are self explanitory. I just changed motors and went through the same thing with an 82 merc 115.
 

mikejallen

Cadet
Joined
May 11, 2009
Messages
25
Re: how do i hook up a rpm gauge????

Thanks that would be great if you had pics.
 

Puddy905

Seaman Apprentice
Joined
Sep 25, 2009
Messages
49
Re: how do i hook up a rpm gauge????

Sorry. Forgot to do it today. I will do it tomorrow night.
 

Moody Blue

Captain
Joined
May 24, 2004
Messages
3,136
Re: how do i hook up a rpm gauge????

If you have an existing tach just mark the wires then remove them and hook up to a new tach.

There will be three wires. Gnd, +12V and signal. If you have illumination for other gauges then you will also have a wire for the backlight illumination.
 

Puddy905

Seaman Apprentice
Joined
Sep 25, 2009
Messages
49
Re: how do i hook up a rpm gauge????

Hey...sorry for the delay. Hope these work. The blue wire is the one you want to hook up.
15gdvz8.jpg

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